Home / 20,001.45-29,981.43-8,913.36

Finding the Fourth Proportional to 20,001.45, 29,981.43 and 8,913.36

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Solution

The fourth proportional to 20,001.45, 29,981.43 and 8,913.36 is: 13,360.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,001.45 : 29,981.43 = 8,913.36 : x
  2. Step 2: Convert to fraction form
    20,001.45/29,981.43 = 8,913.36/x
  3. Step 3: Cross multiply
    20,001.45x = 29,981.43 × 8,913.36
  4. Step 4: Simplify right side
    20,001.45x = 267,235,278.90
  5. Step 5: Solve for x
    x = 267,235,278.90/20,001.45
  6. Step 6: Final answer
    x = 13,360.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.