Home / 31,004.88-42,785.10-16,857.66

Finding the Fourth Proportional to 31,004.88, 42,785.10 and 16,857.66

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Solution

The fourth proportional to 31,004.88, 42,785.10 and 16,857.66 is: 23,262.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,004.88 : 42,785.10 = 16,857.66 : x
  2. Step 2: Convert to fraction form
    31,004.88/42,785.10 = 16,857.66/x
  3. Step 3: Cross multiply
    31,004.88x = 42,785.10 × 16,857.66
  4. Step 4: Simplify right side
    31,004.88x = 721,256,668.87
  5. Step 5: Solve for x
    x = 721,256,668.87/31,004.88
  6. Step 6: Final answer
    x = 23,262.68

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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.