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Finding the Fourth Proportional to 13,882.68, 19,158.48 and 7,915.32

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Solution

The fourth proportional to 13,882.68, 19,158.48 and 7,915.32 is: 10,923.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,882.68 : 19,158.48 = 7,915.32 : x
  2. Step 2: Convert to fraction form
    13,882.68/19,158.48 = 7,915.32/x
  3. Step 3: Cross multiply
    13,882.68x = 19,158.48 × 7,915.32
  4. Step 4: Simplify right side
    13,882.68x = 151,645,499.91
  5. Step 5: Solve for x
    x = 151,645,499.91/13,882.68
  6. Step 6: Final answer
    x = 10,923.36

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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.