Home / 31,500.20-47,250.30-21,002.60

Finding the Fourth Proportional to 31,500.20, 47,250.30 and 21,002.60

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Solution

The fourth proportional to 31,500.20, 47,250.30 and 21,002.60 is: 31,503.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,500.20 : 47,250.30 = 21,002.60 : x
  2. Step 2: Convert to fraction form
    31,500.20/47,250.30 = 21,002.60/x
  3. Step 3: Cross multiply
    31,500.20x = 47,250.30 × 21,002.60
  4. Step 4: Simplify right side
    31,500.20x = 992,379,150.78
  5. Step 5: Solve for x
    x = 992,379,150.78/31,500.20
  6. Step 6: Final answer
    x = 31,503.90

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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.