Home / 31,435.08-47,159.96-13,909.92

Finding the Fourth Proportional to 31,435.08, 47,159.96 and 13,909.92

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Solution

The fourth proportional to 31,435.08, 47,159.96 and 13,909.92 is: 20,868.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,435.08 : 47,159.96 = 13,909.92 : x
  2. Step 2: Convert to fraction form
    31,435.08/47,159.96 = 13,909.92/x
  3. Step 3: Cross multiply
    31,435.08x = 47,159.96 × 13,909.92
  4. Step 4: Simplify right side
    31,435.08x = 655,991,201.25
  5. Step 5: Solve for x
    x = 655,991,201.25/31,435.08
  6. Step 6: Final answer
    x = 20,868.13

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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.