Home / 31,365.14-47,047.10-12,644.78

Finding the Fourth Proportional to 31,365.14, 47,047.10 and 12,644.78

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Solution

The fourth proportional to 31,365.14, 47,047.10 and 12,644.78 is: 18,966.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,365.14 : 47,047.10 = 12,644.78 : x
  2. Step 2: Convert to fraction form
    31,365.14/47,047.10 = 12,644.78/x
  3. Step 3: Cross multiply
    31,365.14x = 47,047.10 × 12,644.78
  4. Step 4: Simplify right side
    31,365.14x = 594,899,930.68
  5. Step 5: Solve for x
    x = 594,899,930.68/31,365.14
  6. Step 6: Final answer
    x = 18,966.92

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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.