Home / 31,331.32-43,244.76-21,276.52

Finding the Fourth Proportional to 31,331.32, 43,244.76 and 21,276.52

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Solution

The fourth proportional to 31,331.32, 43,244.76 and 21,276.52 is: 29,366.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,331.32 : 43,244.76 = 21,276.52 : x
  2. Step 2: Convert to fraction form
    31,331.32/43,244.76 = 21,276.52/x
  3. Step 3: Cross multiply
    31,331.32x = 43,244.76 × 21,276.52
  4. Step 4: Simplify right side
    31,331.32x = 920,098,001.04
  5. Step 5: Solve for x
    x = 920,098,001.04/31,331.32
  6. Step 6: Final answer
    x = 29,366.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.