Home / 31,305.10-43,200.78-17,157.91

Finding the Fourth Proportional to 31,305.10, 43,200.78 and 17,157.91

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Solution

The fourth proportional to 31,305.10, 43,200.78 and 17,157.91 is: 23,677.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,305.10 : 43,200.78 = 17,157.91 : x
  2. Step 2: Convert to fraction form
    31,305.10/43,200.78 = 17,157.91/x
  3. Step 3: Cross multiply
    31,305.10x = 43,200.78 × 17,157.91
  4. Step 4: Simplify right side
    31,305.10x = 741,235,095.17
  5. Step 5: Solve for x
    x = 741,235,095.17/31,305.10
  6. Step 6: Final answer
    x = 23,677.77

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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.