Home / 15,428.40-23,191.20-15,136.80

Finding the Fourth Proportional to 15,428.40, 23,191.20 and 15,136.80

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Solution

The fourth proportional to 15,428.40, 23,191.20 and 15,136.80 is: 22,752.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,428.40 : 23,191.20 = 15,136.80 : x
  2. Step 2: Convert to fraction form
    15,428.40/23,191.20 = 15,136.80/x
  3. Step 3: Cross multiply
    15,428.40x = 23,191.20 × 15,136.80
  4. Step 4: Simplify right side
    15,428.40x = 351,040,556.16
  5. Step 5: Solve for x
    x = 351,040,556.16/15,428.40
  6. Step 6: Final answer
    x = 22,752.88

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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.