Home / 11,135.80-15,349.56-7,549.66

Finding the Fourth Proportional to 11,135.80, 15,349.56 and 7,549.66

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Solution

The fourth proportional to 11,135.80, 15,349.56 and 7,549.66 is: 10,406.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,135.80 : 15,349.56 = 7,549.66 : x
  2. Step 2: Convert to fraction form
    11,135.80/15,349.56 = 7,549.66/x
  3. Step 3: Cross multiply
    11,135.80x = 15,349.56 × 7,549.66
  4. Step 4: Simplify right side
    11,135.80x = 115,883,959.15
  5. Step 5: Solve for x
    x = 115,883,959.15/11,135.80
  6. Step 6: Final answer
    x = 10,406.43

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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.