Home / 31,655.93-43,689.92-19,723.12

Finding the Fourth Proportional to 31,655.93, 43,689.92 and 19,723.12

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Solution

The fourth proportional to 31,655.93, 43,689.92 and 19,723.12 is: 27,220.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,655.93 : 43,689.92 = 19,723.12 : x
  2. Step 2: Convert to fraction form
    31,655.93/43,689.92 = 19,723.12/x
  3. Step 3: Cross multiply
    31,655.93x = 43,689.92 × 19,723.12
  4. Step 4: Simplify right side
    31,655.93x = 861,701,327.11
  5. Step 5: Solve for x
    x = 861,701,327.11/31,655.93
  6. Step 6: Final answer
    x = 27,220.85

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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.