Home / 13,351.28-20,001.20-7,490.12

Finding the Fourth Proportional to 13,351.28, 20,001.20 and 7,490.12

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Solution

The fourth proportional to 13,351.28, 20,001.20 and 7,490.12 is: 11,220.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,351.28 : 20,001.20 = 7,490.12 : x
  2. Step 2: Convert to fraction form
    13,351.28/20,001.20 = 7,490.12/x
  3. Step 3: Cross multiply
    13,351.28x = 20,001.20 × 7,490.12
  4. Step 4: Simplify right side
    13,351.28x = 149,811,250.69
  5. Step 5: Solve for x
    x = 149,811,250.69/13,351.28
  6. Step 6: Final answer
    x = 11,220.74

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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.