Home / 20,747.85-31,152.80-11,873.17

Finding the Fourth Proportional to 20,747.85, 31,152.80 and 11,873.17

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Solution

The fourth proportional to 20,747.85, 31,152.80 and 11,873.17 is: 17,827.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,747.85 : 31,152.80 = 11,873.17 : x
  2. Step 2: Convert to fraction form
    20,747.85/31,152.80 = 11,873.17/x
  3. Step 3: Cross multiply
    20,747.85x = 31,152.80 × 11,873.17
  4. Step 4: Simplify right side
    20,747.85x = 369,882,490.38
  5. Step 5: Solve for x
    x = 369,882,490.38/20,747.85
  6. Step 6: Final answer
    x = 17,827.51

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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.