Home / 31,386.30-43,313.07-17,239.13

Finding the Fourth Proportional to 31,386.30, 43,313.07 and 17,239.13

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Solution

The fourth proportional to 31,386.30, 43,313.07 and 17,239.13 is: 23,789.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,386.30 : 43,313.07 = 17,239.13 : x
  2. Step 2: Convert to fraction form
    31,386.30/43,313.07 = 17,239.13/x
  3. Step 3: Cross multiply
    31,386.30x = 43,313.07 × 17,239.13
  4. Step 4: Simplify right side
    31,386.30x = 746,679,644.43
  5. Step 5: Solve for x
    x = 746,679,644.43/31,386.30
  6. Step 6: Final answer
    x = 23,789.99

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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.