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Finding the Fourth Proportional to 25,248.71, 34,845.21 and 13,920.21

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Solution

The fourth proportional to 25,248.71, 34,845.21 and 13,920.21 is: 19,210.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,248.71 : 34,845.21 = 13,920.21 : x
  2. Step 2: Convert to fraction form
    25,248.71/34,845.21 = 13,920.21/x
  3. Step 3: Cross multiply
    25,248.71x = 34,845.21 × 13,920.21
  4. Step 4: Simplify right side
    25,248.71x = 485,052,640.69
  5. Step 5: Solve for x
    x = 485,052,640.69/25,248.71
  6. Step 6: Final answer
    x = 19,210.99

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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.