Home / 22,121.16-30,526.92-12,689.52

Finding the Fourth Proportional to 22,121.16, 30,526.92 and 12,689.52

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Solution

The fourth proportional to 22,121.16, 30,526.92 and 12,689.52 is: 17,511.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,121.16 : 30,526.92 = 12,689.52 : x
  2. Step 2: Convert to fraction form
    22,121.16/30,526.92 = 12,689.52/x
  3. Step 3: Cross multiply
    22,121.16x = 30,526.92 × 12,689.52
  4. Step 4: Simplify right side
    22,121.16x = 387,371,961.88
  5. Step 5: Solve for x
    x = 387,371,961.88/22,121.16
  6. Step 6: Final answer
    x = 17,511.38

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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.