Home / 13,380.40-20,061.66-7,136.56

Finding the Fourth Proportional to 13,380.40, 20,061.66 and 7,136.56

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Solution

The fourth proportional to 13,380.40, 20,061.66 and 7,136.56 is: 10,700.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,380.40 : 20,061.66 = 7,136.56 : x
  2. Step 2: Convert to fraction form
    13,380.40/20,061.66 = 7,136.56/x
  3. Step 3: Cross multiply
    13,380.40x = 20,061.66 × 7,136.56
  4. Step 4: Simplify right side
    13,380.40x = 143,171,240.29
  5. Step 5: Solve for x
    x = 143,171,240.29/13,380.40
  6. Step 6: Final answer
    x = 10,700.07

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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.