Home / 10,119.92-13,962.12-6,139.76

Finding the Fourth Proportional to 10,119.92, 13,962.12 and 6,139.76

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Solution

The fourth proportional to 10,119.92, 13,962.12 and 6,139.76 is: 8,470.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,119.92 : 13,962.12 = 6,139.76 : x
  2. Step 2: Convert to fraction form
    10,119.92/13,962.12 = 6,139.76/x
  3. Step 3: Cross multiply
    10,119.92x = 13,962.12 × 6,139.76
  4. Step 4: Simplify right side
    10,119.92x = 85,724,065.89
  5. Step 5: Solve for x
    x = 85,724,065.89/10,119.92
  6. Step 6: Final answer
    x = 8,470.82

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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.