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Finding the Fourth Proportional to 28,615.68, 39,469.68 and 27,652.32

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Solution

The fourth proportional to 28,615.68, 39,469.68 and 27,652.32 is: 38,140.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,615.68 : 39,469.68 = 27,652.32 : x
  2. Step 2: Convert to fraction form
    28,615.68/39,469.68 = 27,652.32/x
  3. Step 3: Cross multiply
    28,615.68x = 39,469.68 × 27,652.32
  4. Step 4: Simplify right side
    28,615.68x = 1,091,428,221.66
  5. Step 5: Solve for x
    x = 1,091,428,221.66/28,615.68
  6. Step 6: Final answer
    x = 38,140.92

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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.