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Finding the Fourth Proportional to 28,549.97, 39,397.97 and 15,803.71

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Solution

The fourth proportional to 28,549.97, 39,397.97 and 15,803.71 is: 21,808.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,549.97 : 39,397.97 = 15,803.71 : x
  2. Step 2: Convert to fraction form
    28,549.97/39,397.97 = 15,803.71/x
  3. Step 3: Cross multiply
    28,549.97x = 39,397.97 × 15,803.71
  4. Step 4: Simplify right side
    28,549.97x = 622,633,989.04
  5. Step 5: Solve for x
    x = 622,633,989.04/28,549.97
  6. Step 6: Final answer
    x = 21,808.57

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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.