Home / 20,480.59-28,248.64-13,671.17

Finding the Fourth Proportional to 20,480.59, 28,248.64 and 13,671.17

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Solution

The fourth proportional to 20,480.59, 28,248.64 and 13,671.17 is: 18,856.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,480.59 : 28,248.64 = 13,671.17 : x
  2. Step 2: Convert to fraction form
    20,480.59/28,248.64 = 13,671.17/x
  3. Step 3: Cross multiply
    20,480.59x = 28,248.64 × 13,671.17
  4. Step 4: Simplify right side
    20,480.59x = 386,191,959.71
  5. Step 5: Solve for x
    x = 386,191,959.71/20,480.59
  6. Step 6: Final answer
    x = 18,856.49

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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.