Home / 22,981.14-31,713.98-12,909.58

Finding the Fourth Proportional to 22,981.14, 31,713.98 and 12,909.58

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Solution

The fourth proportional to 22,981.14, 31,713.98 and 12,909.58 is: 17,815.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,981.14 : 31,713.98 = 12,909.58 : x
  2. Step 2: Convert to fraction form
    22,981.14/31,713.98 = 12,909.58/x
  3. Step 3: Cross multiply
    22,981.14x = 31,713.98 × 12,909.58
  4. Step 4: Simplify right side
    22,981.14x = 409,414,233.84
  5. Step 5: Solve for x
    x = 409,414,233.84/22,981.14
  6. Step 6: Final answer
    x = 17,815.23

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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.