Home / 39,981.52-59,972.56-13,686.48

Finding the Fourth Proportional to 39,981.52, 59,972.56 and 13,686.48

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Solution

The fourth proportional to 39,981.52, 59,972.56 and 13,686.48 is: 20,529.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,981.52 : 59,972.56 = 13,686.48 : x
  2. Step 2: Convert to fraction form
    39,981.52/59,972.56 = 13,686.48/x
  3. Step 3: Cross multiply
    39,981.52x = 59,972.56 × 13,686.48
  4. Step 4: Simplify right side
    39,981.52x = 820,813,242.99
  5. Step 5: Solve for x
    x = 820,813,242.99/39,981.52
  6. Step 6: Final answer
    x = 20,529.82

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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.