Home / 19,868.28-27,418.26-10,915.70

Finding the Fourth Proportional to 19,868.28, 27,418.26 and 10,915.70

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Solution

The fourth proportional to 19,868.28, 27,418.26 and 10,915.70 is: 15,063.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,868.28 : 27,418.26 = 10,915.70 : x
  2. Step 2: Convert to fraction form
    19,868.28/27,418.26 = 10,915.70/x
  3. Step 3: Cross multiply
    19,868.28x = 27,418.26 × 10,915.70
  4. Step 4: Simplify right side
    19,868.28x = 299,289,446.10
  5. Step 5: Solve for x
    x = 299,289,446.10/19,868.28
  6. Step 6: Final answer
    x = 15,063.69

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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.