Home / 11,387.20-15,716.28-6,674.08

Finding the Fourth Proportional to 11,387.20, 15,716.28 and 6,674.08

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Solution

The fourth proportional to 11,387.20, 15,716.28 and 6,674.08 is: 9,211.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,387.20 : 15,716.28 = 6,674.08 : x
  2. Step 2: Convert to fraction form
    11,387.20/15,716.28 = 6,674.08/x
  3. Step 3: Cross multiply
    11,387.20x = 15,716.28 × 6,674.08
  4. Step 4: Simplify right side
    11,387.20x = 104,891,710.02
  5. Step 5: Solve for x
    x = 104,891,710.02/11,387.20
  6. Step 6: Final answer
    x = 9,211.37

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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.