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Finding the Fourth Proportional to 22,211.74, 30,610.02 and 15,913.18

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Solution

The fourth proportional to 22,211.74, 30,610.02 and 15,913.18 is: 21,929.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,211.74 : 30,610.02 = 15,913.18 : x
  2. Step 2: Convert to fraction form
    22,211.74/30,610.02 = 15,913.18/x
  3. Step 3: Cross multiply
    22,211.74x = 30,610.02 × 15,913.18
  4. Step 4: Simplify right side
    22,211.74x = 487,102,758.06
  5. Step 5: Solve for x
    x = 487,102,758.06/22,211.74
  6. Step 6: Final answer
    x = 21,929.97

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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.