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Finding the Fourth Proportional to 38,452.16, 53,063.68 and 20,788.16

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Solution

The fourth proportional to 38,452.16, 53,063.68 and 20,788.16 is: 28,687.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,452.16 : 53,063.68 = 20,788.16 : x
  2. Step 2: Convert to fraction form
    38,452.16/53,063.68 = 20,788.16/x
  3. Step 3: Cross multiply
    38,452.16x = 53,063.68 × 20,788.16
  4. Step 4: Simplify right side
    38,452.16x = 1,103,096,270.03
  5. Step 5: Solve for x
    x = 1,103,096,270.03/38,452.16
  6. Step 6: Final answer
    x = 28,687.50

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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.