Home / 11,281.38-15,566.49-7,086.66

Finding the Fourth Proportional to 11,281.38, 15,566.49 and 7,086.66

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Solution

The fourth proportional to 11,281.38, 15,566.49 and 7,086.66 is: 9,778.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,281.38 : 15,566.49 = 7,086.66 : x
  2. Step 2: Convert to fraction form
    11,281.38/15,566.49 = 7,086.66/x
  3. Step 3: Cross multiply
    11,281.38x = 15,566.49 × 7,086.66
  4. Step 4: Simplify right side
    11,281.38x = 110,314,422.02
  5. Step 5: Solve for x
    x = 110,314,422.02/11,281.38
  6. Step 6: Final answer
    x = 9,778.45

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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.