Home / 31,431.39-43,376.48-17,285.55

Finding the Fourth Proportional to 31,431.39, 43,376.48 and 17,285.55

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Solution

The fourth proportional to 31,431.39, 43,376.48 and 17,285.55 is: 23,854.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,431.39 : 43,376.48 = 17,285.55 : x
  2. Step 2: Convert to fraction form
    31,431.39/43,376.48 = 17,285.55/x
  3. Step 3: Cross multiply
    31,431.39x = 43,376.48 × 17,285.55
  4. Step 4: Simplify right side
    31,431.39x = 749,786,227.44
  5. Step 5: Solve for x
    x = 749,786,227.44/31,431.39
  6. Step 6: Final answer
    x = 23,854.70

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Half scale
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Double scale
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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.