Home / 31,385.32-43,311.70-17,239.07

Finding the Fourth Proportional to 31,385.32, 43,311.70 and 17,239.07

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Solution

The fourth proportional to 31,385.32, 43,311.70 and 17,239.07 is: 23,789.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,385.32 : 43,311.70 = 17,239.07 : x
  2. Step 2: Convert to fraction form
    31,385.32/43,311.70 = 17,239.07/x
  3. Step 3: Cross multiply
    31,385.32x = 43,311.70 × 17,239.07
  4. Step 4: Simplify right side
    31,385.32x = 746,653,428.12
  5. Step 5: Solve for x
    x = 746,653,428.12/31,385.32
  6. Step 6: Final answer
    x = 23,789.89

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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.