Home / 22,099.76-30,511.68-13,721.12

Finding the Fourth Proportional to 22,099.76, 30,511.68 and 13,721.12

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Solution

The fourth proportional to 22,099.76, 30,511.68 and 13,721.12 is: 18,943.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,099.76 : 30,511.68 = 13,721.12 : x
  2. Step 2: Convert to fraction form
    22,099.76/30,511.68 = 13,721.12/x
  3. Step 3: Cross multiply
    22,099.76x = 30,511.68 × 13,721.12
  4. Step 4: Simplify right side
    22,099.76x = 418,654,422.68
  5. Step 5: Solve for x
    x = 418,654,422.68/22,099.76
  6. Step 6: Final answer
    x = 18,943.84

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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.