Home / 31,681.60-47,515.92-10,906.72

Finding the Fourth Proportional to 31,681.60, 47,515.92 and 10,906.72

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Solution

The fourth proportional to 31,681.60, 47,515.92 and 10,906.72 is: 16,357.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,681.60 : 47,515.92 = 10,906.72 : x
  2. Step 2: Convert to fraction form
    31,681.60/47,515.92 = 10,906.72/x
  3. Step 3: Cross multiply
    31,681.60x = 47,515.92 × 10,906.72
  4. Step 4: Simplify right side
    31,681.60x = 518,242,834.98
  5. Step 5: Solve for x
    x = 518,242,834.98/31,681.60
  6. Step 6: Final answer
    x = 16,357.85

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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.