Home / 31,400.20-47,100.30-12,932.20

Finding the Fourth Proportional to 31,400.20, 47,100.30 and 12,932.20

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Solution

The fourth proportional to 31,400.20, 47,100.30 and 12,932.20 is: 19,398.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,400.20 : 47,100.30 = 12,932.20 : x
  2. Step 2: Convert to fraction form
    31,400.20/47,100.30 = 12,932.20/x
  3. Step 3: Cross multiply
    31,400.20x = 47,100.30 × 12,932.20
  4. Step 4: Simplify right side
    31,400.20x = 609,110,499.66
  5. Step 5: Solve for x
    x = 609,110,499.66/31,400.20
  6. Step 6: Final answer
    x = 19,398.30

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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.