Home / 21,316.35-29,408.85-12,358.92

Finding the Fourth Proportional to 21,316.35, 29,408.85 and 12,358.92

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Solution

The fourth proportional to 21,316.35, 29,408.85 and 12,358.92 is: 17,050.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,316.35 : 29,408.85 = 12,358.92 : x
  2. Step 2: Convert to fraction form
    21,316.35/29,408.85 = 12,358.92/x
  3. Step 3: Cross multiply
    21,316.35x = 29,408.85 × 12,358.92
  4. Step 4: Simplify right side
    21,316.35x = 363,461,624.44
  5. Step 5: Solve for x
    x = 363,461,624.44/21,316.35
  6. Step 6: Final answer
    x = 17,050.84

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Double scale
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Similar ratio
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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.