Home / 15,940.81-21,948.24-13,545.73

Finding the Fourth Proportional to 15,940.81, 21,948.24 and 13,545.73

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Solution

The fourth proportional to 15,940.81, 21,948.24 and 13,545.73 is: 18,650.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,940.81 : 21,948.24 = 13,545.73 : x
  2. Step 2: Convert to fraction form
    15,940.81/21,948.24 = 13,545.73/x
  3. Step 3: Cross multiply
    15,940.81x = 21,948.24 × 13,545.73
  4. Step 4: Simplify right side
    15,940.81x = 297,304,933.02
  5. Step 5: Solve for x
    x = 297,304,933.02/15,940.81
  6. Step 6: Final answer
    x = 18,650.55

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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.