Home / 15,214.90-20,995.56-8,500.20

Finding the Fourth Proportional to 15,214.90, 20,995.56 and 8,500.20

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Solution

The fourth proportional to 15,214.90, 20,995.56 and 8,500.20 is: 11,729.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,214.90 : 20,995.56 = 8,500.20 : x
  2. Step 2: Convert to fraction form
    15,214.90/20,995.56 = 8,500.20/x
  3. Step 3: Cross multiply
    15,214.90x = 20,995.56 × 8,500.20
  4. Step 4: Simplify right side
    15,214.90x = 178,466,354.13
  5. Step 5: Solve for x
    x = 178,466,354.13/15,214.90
  6. Step 6: Final answer
    x = 11,729.71

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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.