Home / 31,388.32-47,082.40-19,709.74

Finding the Fourth Proportional to 31,388.32, 47,082.40 and 19,709.74

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Solution

The fourth proportional to 31,388.32, 47,082.40 and 19,709.74 is: 29,564.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,388.32 : 47,082.40 = 19,709.74 : x
  2. Step 2: Convert to fraction form
    31,388.32/47,082.40 = 19,709.74/x
  3. Step 3: Cross multiply
    31,388.32x = 47,082.40 × 19,709.74
  4. Step 4: Simplify right side
    31,388.32x = 927,981,862.58
  5. Step 5: Solve for x
    x = 927,981,862.58/31,388.32
  6. Step 6: Final answer
    x = 29,564.56

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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.