Home / 31,385.64-43,313.22-17,239.80

Finding the Fourth Proportional to 31,385.64, 43,313.22 and 17,239.80

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Solution

The fourth proportional to 31,385.64, 43,313.22 and 17,239.80 is: 23,791.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,385.64 : 43,313.22 = 17,239.80 : x
  2. Step 2: Convert to fraction form
    31,385.64/43,313.22 = 17,239.80/x
  3. Step 3: Cross multiply
    31,385.64x = 43,313.22 × 17,239.80
  4. Step 4: Simplify right side
    31,385.64x = 746,711,250.16
  5. Step 5: Solve for x
    x = 746,711,250.16/31,385.64
  6. Step 6: Final answer
    x = 23,791.49

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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.