Home / 10,990.85-15,167.43-5,955.08

Finding the Fourth Proportional to 10,990.85, 15,167.43 and 5,955.08

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Solution

The fourth proportional to 10,990.85, 15,167.43 and 5,955.08 is: 8,218.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,990.85 : 15,167.43 = 5,955.08 : x
  2. Step 2: Convert to fraction form
    10,990.85/15,167.43 = 5,955.08/x
  3. Step 3: Cross multiply
    10,990.85x = 15,167.43 × 5,955.08
  4. Step 4: Simplify right side
    10,990.85x = 90,323,259.04
  5. Step 5: Solve for x
    x = 90,323,259.04/10,990.85
  6. Step 6: Final answer
    x = 8,218.04

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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.