Home / 31,931.25-47,918.88-11,154.75

Finding the Fourth Proportional to 31,931.25, 47,918.88 and 11,154.75

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Solution

The fourth proportional to 31,931.25, 47,918.88 and 11,154.75 is: 16,739.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,931.25 : 47,918.88 = 11,154.75 : x
  2. Step 2: Convert to fraction form
    31,931.25/47,918.88 = 11,154.75/x
  3. Step 3: Cross multiply
    31,931.25x = 47,918.88 × 11,154.75
  4. Step 4: Simplify right side
    31,931.25x = 534,523,126.68
  5. Step 5: Solve for x
    x = 534,523,126.68/31,931.25
  6. Step 6: Final answer
    x = 16,739.81

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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.