Home / 15,990.30-22,066.34-8,820.90

Finding the Fourth Proportional to 15,990.30, 22,066.34 and 8,820.90

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Solution

The fourth proportional to 15,990.30, 22,066.34 and 8,820.90 is: 12,172.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,990.30 : 22,066.34 = 8,820.90 : x
  2. Step 2: Convert to fraction form
    15,990.30/22,066.34 = 8,820.90/x
  3. Step 3: Cross multiply
    15,990.30x = 22,066.34 × 8,820.90
  4. Step 4: Simplify right side
    15,990.30x = 194,644,934.40
  5. Step 5: Solve for x
    x = 194,644,934.40/15,990.30
  6. Step 6: Final answer
    x = 12,172.69

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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.