Home / 10,990.81-15,167.21-5,955.04

Finding the Fourth Proportional to 10,990.81, 15,167.21 and 5,955.04

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Solution

The fourth proportional to 10,990.81, 15,167.21 and 5,955.04 is: 8,217.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,990.81 : 15,167.21 = 5,955.04 : x
  2. Step 2: Convert to fraction form
    10,990.81/15,167.21 = 5,955.04/x
  3. Step 3: Cross multiply
    10,990.81x = 15,167.21 × 5,955.04
  4. Step 4: Simplify right side
    10,990.81x = 90,321,342.24
  5. Step 5: Solve for x
    x = 90,321,342.24/10,990.81
  6. Step 6: Final answer
    x = 8,217.90

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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.