Home / 22,291.10-30,761.28-12,219.56

Finding the Fourth Proportional to 22,291.10, 30,761.28 and 12,219.56

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Solution

The fourth proportional to 22,291.10, 30,761.28 and 12,219.56 is: 16,862.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,291.10 : 30,761.28 = 12,219.56 : x
  2. Step 2: Convert to fraction form
    22,291.10/30,761.28 = 12,219.56/x
  3. Step 3: Cross multiply
    22,291.10x = 30,761.28 × 12,219.56
  4. Step 4: Simplify right side
    22,291.10x = 375,889,306.64
  5. Step 5: Solve for x
    x = 375,889,306.64/22,291.10
  6. Step 6: Final answer
    x = 16,862.75

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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.