Home / 31,215.45-43,065.19-19,882.92

Finding the Fourth Proportional to 31,215.45, 43,065.19 and 19,882.92

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Solution

The fourth proportional to 31,215.45, 43,065.19 and 19,882.92 is: 27,430.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,215.45 : 43,065.19 = 19,882.92 : x
  2. Step 2: Convert to fraction form
    31,215.45/43,065.19 = 19,882.92/x
  3. Step 3: Cross multiply
    31,215.45x = 43,065.19 × 19,882.92
  4. Step 4: Simplify right side
    31,215.45x = 856,261,727.55
  5. Step 5: Solve for x
    x = 856,261,727.55/31,215.45
  6. Step 6: Final answer
    x = 27,430.70

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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.