Home / 22,380.19-30,885.44-12,309.39

Finding the Fourth Proportional to 22,380.19, 30,885.44 and 12,309.39

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Solution

The fourth proportional to 22,380.19, 30,885.44 and 12,309.39 is: 16,987.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,380.19 : 30,885.44 = 12,309.39 : x
  2. Step 2: Convert to fraction form
    22,380.19/30,885.44 = 12,309.39/x
  3. Step 3: Cross multiply
    22,380.19x = 30,885.44 × 12,309.39
  4. Step 4: Simplify right side
    22,380.19x = 380,180,864.73
  5. Step 5: Solve for x
    x = 380,180,864.73/22,380.19
  6. Step 6: Final answer
    x = 16,987.39

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Find fourth proportional to 11,190.09, 15,442.72 and 6,154.70
Half scale
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Double scale
Find fourth proportional to 22,381.19, 30,886.82 and 12,310.39
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.