Home / 31,387.20-43,313.84-17,240.04

Finding the Fourth Proportional to 31,387.20, 43,313.84 and 17,240.04

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Solution

The fourth proportional to 31,387.20, 43,313.84 and 17,240.04 is: 23,790.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,387.20 : 43,313.84 = 17,240.04 : x
  2. Step 2: Convert to fraction form
    31,387.20/43,313.84 = 17,240.04/x
  3. Step 3: Cross multiply
    31,387.20x = 43,313.84 × 17,240.04
  4. Step 4: Simplify right side
    31,387.20x = 746,732,312.60
  5. Step 5: Solve for x
    x = 746,732,312.60/31,387.20
  6. Step 6: Final answer
    x = 23,790.98

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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.