Home / 12,009.34-16,580.19-8,238.70

Finding the Fourth Proportional to 12,009.34, 16,580.19 and 8,238.70

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Solution

The fourth proportional to 12,009.34, 16,580.19 and 8,238.70 is: 11,374.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,009.34 : 16,580.19 = 8,238.70 : x
  2. Step 2: Convert to fraction form
    12,009.34/16,580.19 = 8,238.70/x
  3. Step 3: Cross multiply
    12,009.34x = 16,580.19 × 8,238.70
  4. Step 4: Simplify right side
    12,009.34x = 136,599,211.35
  5. Step 5: Solve for x
    x = 136,599,211.35/12,009.34
  6. Step 6: Final answer
    x = 11,374.41

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Half scale
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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.