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Finding the Fourth Proportional to 25,499.53, 35,191.01 and 15,428.39

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Solution

The fourth proportional to 25,499.53, 35,191.01 and 15,428.39 is: 21,292.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,499.53 : 35,191.01 = 15,428.39 : x
  2. Step 2: Convert to fraction form
    25,499.53/35,191.01 = 15,428.39/x
  3. Step 3: Cross multiply
    25,499.53x = 35,191.01 × 15,428.39
  4. Step 4: Simplify right side
    25,499.53x = 542,940,600.55
  5. Step 5: Solve for x
    x = 542,940,600.55/25,499.53
  6. Step 6: Final answer
    x = 21,292.18

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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.