Home / 10,885.92-15,018.24-7,107.87

Finding the Fourth Proportional to 10,885.92, 15,018.24 and 7,107.87

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Solution

The fourth proportional to 10,885.92, 15,018.24 and 7,107.87 is: 9,806.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,885.92 : 15,018.24 = 7,107.87 : x
  2. Step 2: Convert to fraction form
    10,885.92/15,018.24 = 7,107.87/x
  3. Step 3: Cross multiply
    10,885.92x = 15,018.24 × 7,107.87
  4. Step 4: Simplify right side
    10,885.92x = 106,747,697.55
  5. Step 5: Solve for x
    x = 106,747,697.55/10,885.92
  6. Step 6: Final answer
    x = 9,806.03

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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.