Home / 22,118.12-30,526.98-12,689.80

Finding the Fourth Proportional to 22,118.12, 30,526.98 and 12,689.80

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Solution

The fourth proportional to 22,118.12, 30,526.98 and 12,689.80 is: 17,514.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,118.12 : 30,526.98 = 12,689.80 : x
  2. Step 2: Convert to fraction form
    22,118.12/30,526.98 = 12,689.80/x
  3. Step 3: Cross multiply
    22,118.12x = 30,526.98 × 12,689.80
  4. Step 4: Simplify right side
    22,118.12x = 387,381,270.80
  5. Step 5: Solve for x
    x = 387,381,270.80/22,118.12
  6. Step 6: Final answer
    x = 17,514.20

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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.