Home / 31,543.91-43,529.13-18,105.71

Finding the Fourth Proportional to 31,543.91, 43,529.13 and 18,105.71

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Solution

The fourth proportional to 31,543.91, 43,529.13 and 18,105.71 is: 24,985.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,543.91 : 43,529.13 = 18,105.71 : x
  2. Step 2: Convert to fraction form
    31,543.91/43,529.13 = 18,105.71/x
  3. Step 3: Cross multiply
    31,543.91x = 43,529.13 × 18,105.71
  4. Step 4: Simplify right side
    31,543.91x = 788,125,804.33
  5. Step 5: Solve for x
    x = 788,125,804.33/31,543.91
  6. Step 6: Final answer
    x = 24,985.04

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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.