Home / 20,713.97-31,098.06-12,295.84

Finding the Fourth Proportional to 20,713.97, 31,098.06 and 12,295.84

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Solution

The fourth proportional to 20,713.97, 31,098.06 and 12,295.84 is: 18,459.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,713.97 : 31,098.06 = 12,295.84 : x
  2. Step 2: Convert to fraction form
    20,713.97/31,098.06 = 12,295.84/x
  3. Step 3: Cross multiply
    20,713.97x = 31,098.06 × 12,295.84
  4. Step 4: Simplify right side
    20,713.97x = 382,376,553.10
  5. Step 5: Solve for x
    x = 382,376,553.10/20,713.97
  6. Step 6: Final answer
    x = 18,459.84

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1.5x scale

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.