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Finding the Fourth Proportional to 25,356.60, 38,034.90 and 15,515.10

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Solution

The fourth proportional to 25,356.60, 38,034.90 and 15,515.10 is: 23,272.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,356.60 : 38,034.90 = 15,515.10 : x
  2. Step 2: Convert to fraction form
    25,356.60/38,034.90 = 15,515.10/x
  3. Step 3: Cross multiply
    25,356.60x = 38,034.90 × 15,515.10
  4. Step 4: Simplify right side
    25,356.60x = 590,115,276.99
  5. Step 5: Solve for x
    x = 590,115,276.99/25,356.60
  6. Step 6: Final answer
    x = 23,272.65

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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.