Home / 31,440.08-47,141.87-12,704.78

Finding the Fourth Proportional to 31,440.08, 47,141.87 and 12,704.78

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Solution

The fourth proportional to 31,440.08, 47,141.87 and 12,704.78 is: 19,049.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,440.08 : 47,141.87 = 12,704.78 : x
  2. Step 2: Convert to fraction form
    31,440.08/47,141.87 = 12,704.78/x
  3. Step 3: Cross multiply
    31,440.08x = 47,141.87 × 12,704.78
  4. Step 4: Simplify right side
    31,440.08x = 598,927,141.47
  5. Step 5: Solve for x
    x = 598,927,141.47/31,440.08
  6. Step 6: Final answer
    x = 19,049.80

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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.