Home / 31,285.71-43,174.26-17,139.06

Finding the Fourth Proportional to 31,285.71, 43,174.26 and 17,139.06

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Solution

The fourth proportional to 31,285.71, 43,174.26 and 17,139.06 is: 23,651.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,285.71 : 43,174.26 = 17,139.06 : x
  2. Step 2: Convert to fraction form
    31,285.71/43,174.26 = 17,139.06/x
  3. Step 3: Cross multiply
    31,285.71x = 43,174.26 × 17,139.06
  4. Step 4: Simplify right side
    31,285.71x = 739,966,232.60
  5. Step 5: Solve for x
    x = 739,966,232.60/31,285.71
  6. Step 6: Final answer
    x = 23,651.89

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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.