Home / 31,063.24-42,861.42-18,320.43

Finding the Fourth Proportional to 31,063.24, 42,861.42 and 18,320.43

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Solution

The fourth proportional to 31,063.24, 42,861.42 and 18,320.43 is: 25,278.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,063.24 : 42,861.42 = 18,320.43 : x
  2. Step 2: Convert to fraction form
    31,063.24/42,861.42 = 18,320.43/x
  3. Step 3: Cross multiply
    31,063.24x = 42,861.42 × 18,320.43
  4. Step 4: Simplify right side
    31,063.24x = 785,239,644.81
  5. Step 5: Solve for x
    x = 785,239,644.81/31,063.24
  6. Step 6: Final answer
    x = 25,278.74

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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.