Home / 22,179.18-30,600-15,806.79

Finding the Fourth Proportional to 22,179.18, 30,600 and 15,806.79

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Solution

The fourth proportional to 22,179.18, 30,600 and 15,806.79 is: 21,808.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,179.18 : 30,600 = 15,806.79 : x
  2. Step 2: Convert to fraction form
    22,179.18/30,600 = 15,806.79/x
  3. Step 3: Cross multiply
    22,179.18x = 30,600 × 15,806.79
  4. Step 4: Simplify right side
    22,179.18x = 483,687,774
  5. Step 5: Solve for x
    x = 483,687,774/22,179.18
  6. Step 6: Final answer
    x = 21,808.19

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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.