Home / 11,216.40-15,482.52-7,691.28

Finding the Fourth Proportional to 11,216.40, 15,482.52 and 7,691.28

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Solution

The fourth proportional to 11,216.40, 15,482.52 and 7,691.28 is: 10,616.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,216.40 : 15,482.52 = 7,691.28 : x
  2. Step 2: Convert to fraction form
    11,216.40/15,482.52 = 7,691.28/x
  3. Step 3: Cross multiply
    11,216.40x = 15,482.52 × 7,691.28
  4. Step 4: Simplify right side
    11,216.40x = 119,080,396.43
  5. Step 5: Solve for x
    x = 119,080,396.43/11,216.40
  6. Step 6: Final answer
    x = 10,616.63

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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.