Home / 15,439.20-23,126.40-12,136.56

Finding the Fourth Proportional to 15,439.20, 23,126.40 and 12,136.56

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Solution

The fourth proportional to 15,439.20, 23,126.40 and 12,136.56 is: 18,179.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,439.20 : 23,126.40 = 12,136.56 : x
  2. Step 2: Convert to fraction form
    15,439.20/23,126.40 = 12,136.56/x
  3. Step 3: Cross multiply
    15,439.20x = 23,126.40 × 12,136.56
  4. Step 4: Simplify right side
    15,439.20x = 280,674,941.18
  5. Step 5: Solve for x
    x = 280,674,941.18/15,439.20
  6. Step 6: Final answer
    x = 18,179.37

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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.