Home / 18,687.47-25,794.95-11,136.17

Finding the Fourth Proportional to 18,687.47, 25,794.95 and 11,136.17

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Solution

The fourth proportional to 18,687.47, 25,794.95 and 11,136.17 is: 15,371.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,687.47 : 25,794.95 = 11,136.17 : x
  2. Step 2: Convert to fraction form
    18,687.47/25,794.95 = 11,136.17/x
  3. Step 3: Cross multiply
    18,687.47x = 25,794.95 × 11,136.17
  4. Step 4: Simplify right side
    18,687.47x = 287,256,911.69
  5. Step 5: Solve for x
    x = 287,256,911.69/18,687.47
  6. Step 6: Final answer
    x = 15,371.63

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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.