Home / 15,449.59-21,320.31-8,737.39

Finding the Fourth Proportional to 15,449.59, 21,320.31 and 8,737.39

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Solution

The fourth proportional to 15,449.59, 21,320.31 and 8,737.39 is: 12,057.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,449.59 : 21,320.31 = 8,737.39 : x
  2. Step 2: Convert to fraction form
    15,449.59/21,320.31 = 8,737.39/x
  3. Step 3: Cross multiply
    15,449.59x = 21,320.31 × 8,737.39
  4. Step 4: Simplify right side
    15,449.59x = 186,283,863.39
  5. Step 5: Solve for x
    x = 186,283,863.39/15,449.59
  6. Step 6: Final answer
    x = 12,057.53

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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.