Home / 10,861.42-14,990.36-6,882.90

Finding the Fourth Proportional to 10,861.42, 14,990.36 and 6,882.90

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Solution

The fourth proportional to 10,861.42, 14,990.36 and 6,882.90 is: 9,499.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,861.42 : 14,990.36 = 6,882.90 : x
  2. Step 2: Convert to fraction form
    10,861.42/14,990.36 = 6,882.90/x
  3. Step 3: Cross multiply
    10,861.42x = 14,990.36 × 6,882.90
  4. Step 4: Simplify right side
    10,861.42x = 103,177,148.84
  5. Step 5: Solve for x
    x = 103,177,148.84/10,861.42
  6. Step 6: Final answer
    x = 9,499.42

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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.