Home / 31,729.20-47,593.80-12,008.40

Finding the Fourth Proportional to 31,729.20, 47,593.80 and 12,008.40

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Solution

The fourth proportional to 31,729.20, 47,593.80 and 12,008.40 is: 18,012.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,729.20 : 47,593.80 = 12,008.40 : x
  2. Step 2: Convert to fraction form
    31,729.20/47,593.80 = 12,008.40/x
  3. Step 3: Cross multiply
    31,729.20x = 47,593.80 × 12,008.40
  4. Step 4: Simplify right side
    31,729.20x = 571,525,387.92
  5. Step 5: Solve for x
    x = 571,525,387.92/31,729.20
  6. Step 6: Final answer
    x = 18,012.60

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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.