Home / 11,157.30-16,715.24-7,988.20

Finding the Fourth Proportional to 11,157.30, 16,715.24 and 7,988.20

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Solution

The fourth proportional to 11,157.30, 16,715.24 and 7,988.20 is: 11,967.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,157.30 : 16,715.24 = 7,988.20 : x
  2. Step 2: Convert to fraction form
    11,157.30/16,715.24 = 7,988.20/x
  3. Step 3: Cross multiply
    11,157.30x = 16,715.24 × 7,988.20
  4. Step 4: Simplify right side
    11,157.30x = 133,524,680.17
  5. Step 5: Solve for x
    x = 133,524,680.17/11,157.30
  6. Step 6: Final answer
    x = 11,967.47

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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.