Home / 31,663.02-43,691.19-18,238.65

Finding the Fourth Proportional to 31,663.02, 43,691.19 and 18,238.65

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Solution

The fourth proportional to 31,663.02, 43,691.19 and 18,238.65 is: 25,167.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,663.02 : 43,691.19 = 18,238.65 : x
  2. Step 2: Convert to fraction form
    31,663.02/43,691.19 = 18,238.65/x
  3. Step 3: Cross multiply
    31,663.02x = 43,691.19 × 18,238.65
  4. Step 4: Simplify right side
    31,663.02x = 796,868,322.49
  5. Step 5: Solve for x
    x = 796,868,322.49/31,663.02
  6. Step 6: Final answer
    x = 25,167.16

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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.