Home / 22,275.24-30,731.28-12,715.68

Finding the Fourth Proportional to 22,275.24, 30,731.28 and 12,715.68

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Solution

The fourth proportional to 22,275.24, 30,731.28 and 12,715.68 is: 17,542.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,275.24 : 30,731.28 = 12,715.68 : x
  2. Step 2: Convert to fraction form
    22,275.24/30,731.28 = 12,715.68/x
  3. Step 3: Cross multiply
    22,275.24x = 30,731.28 × 12,715.68
  4. Step 4: Simplify right side
    22,275.24x = 390,769,122.47
  5. Step 5: Solve for x
    x = 390,769,122.47/22,275.24
  6. Step 6: Final answer
    x = 17,542.76

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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.