Home / 12,087.28-18,136.50-5,515.48

Finding the Fourth Proportional to 12,087.28, 18,136.50 and 5,515.48

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Solution

The fourth proportional to 12,087.28, 18,136.50 and 5,515.48 is: 8,275.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,087.28 : 18,136.50 = 5,515.48 : x
  2. Step 2: Convert to fraction form
    12,087.28/18,136.50 = 5,515.48/x
  3. Step 3: Cross multiply
    12,087.28x = 18,136.50 × 5,515.48
  4. Step 4: Simplify right side
    12,087.28x = 100,031,503.02
  5. Step 5: Solve for x
    x = 100,031,503.02/12,087.28
  6. Step 6: Final answer
    x = 8,275.77

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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.