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Finding the Fourth Proportional to 38,663.60, 57,961.65 and 14,987.30

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Solution

The fourth proportional to 38,663.60, 57,961.65 and 14,987.30 is: 22,467.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,663.60 : 57,961.65 = 14,987.30 : x
  2. Step 2: Convert to fraction form
    38,663.60/57,961.65 = 14,987.30/x
  3. Step 3: Cross multiply
    38,663.60x = 57,961.65 × 14,987.30
  4. Step 4: Simplify right side
    38,663.60x = 868,688,637.05
  5. Step 5: Solve for x
    x = 868,688,637.05/38,663.60
  6. Step 6: Final answer
    x = 22,467.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.