Home / 10,989.76-15,163.68-6,516.88

Finding the Fourth Proportional to 10,989.76, 15,163.68 and 6,516.88

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Solution

The fourth proportional to 10,989.76, 15,163.68 and 6,516.88 is: 8,992.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,989.76 : 15,163.68 = 6,516.88 : x
  2. Step 2: Convert to fraction form
    10,989.76/15,163.68 = 6,516.88/x
  3. Step 3: Cross multiply
    10,989.76x = 15,163.68 × 6,516.88
  4. Step 4: Simplify right side
    10,989.76x = 98,819,882.92
  5. Step 5: Solve for x
    x = 98,819,882.92/10,989.76
  6. Step 6: Final answer
    x = 8,992.00

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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.