Home / 31,232.32-43,116.24-21,213.76

Finding the Fourth Proportional to 31,232.32, 43,116.24 and 21,213.76

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Solution

The fourth proportional to 31,232.32, 43,116.24 and 21,213.76 is: 29,285.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,232.32 : 43,116.24 = 21,213.76 : x
  2. Step 2: Convert to fraction form
    31,232.32/43,116.24 = 21,213.76/x
  3. Step 3: Cross multiply
    31,232.32x = 43,116.24 × 21,213.76
  4. Step 4: Simplify right side
    31,232.32x = 914,657,567.46
  5. Step 5: Solve for x
    x = 914,657,567.46/31,232.32
  6. Step 6: Final answer
    x = 29,285.61

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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.