Home / 31,276.88-43,162.89-17,129.70

Finding the Fourth Proportional to 31,276.88, 43,162.89 and 17,129.70

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Solution

The fourth proportional to 31,276.88, 43,162.89 and 17,129.70 is: 23,639.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,276.88 : 43,162.89 = 17,129.70 : x
  2. Step 2: Convert to fraction form
    31,276.88/43,162.89 = 17,129.70/x
  3. Step 3: Cross multiply
    31,276.88x = 43,162.89 × 17,129.70
  4. Step 4: Simplify right side
    31,276.88x = 739,367,356.83
  5. Step 5: Solve for x
    x = 739,367,356.83/31,276.88
  6. Step 6: Final answer
    x = 23,639.42

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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.