Home / 40,020.28-55,228.58-22,115.70

Finding the Fourth Proportional to 40,020.28, 55,228.58 and 22,115.70

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Solution

The fourth proportional to 40,020.28, 55,228.58 and 22,115.70 is: 30,519.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,020.28 : 55,228.58 = 22,115.70 : x
  2. Step 2: Convert to fraction form
    40,020.28/55,228.58 = 22,115.70/x
  3. Step 3: Cross multiply
    40,020.28x = 55,228.58 × 22,115.70
  4. Step 4: Simplify right side
    40,020.28x = 1,221,418,706.71
  5. Step 5: Solve for x
    x = 1,221,418,706.71/40,020.28
  6. Step 6: Final answer
    x = 30,519.99

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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.