Home / 18,217.89-25,135.25-11,136.87

Finding the Fourth Proportional to 18,217.89, 25,135.25 and 11,136.87

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Solution

The fourth proportional to 18,217.89, 25,135.25 and 11,136.87 is: 15,365.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,217.89 : 25,135.25 = 11,136.87 : x
  2. Step 2: Convert to fraction form
    18,217.89/25,135.25 = 11,136.87/x
  3. Step 3: Cross multiply
    18,217.89x = 25,135.25 × 11,136.87
  4. Step 4: Simplify right side
    18,217.89x = 279,927,955.98
  5. Step 5: Solve for x
    x = 279,927,955.98/18,217.89
  6. Step 6: Final answer
    x = 15,365.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.