Home / 11,356.18-15,655.29-7,988.54

Finding the Fourth Proportional to 11,356.18, 15,655.29 and 7,988.54

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Solution

The fourth proportional to 11,356.18, 15,655.29 and 7,988.54 is: 11,012.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,356.18 : 15,655.29 = 7,988.54 : x
  2. Step 2: Convert to fraction form
    11,356.18/15,655.29 = 7,988.54/x
  3. Step 3: Cross multiply
    11,356.18x = 15,655.29 × 7,988.54
  4. Step 4: Simplify right side
    11,356.18x = 125,062,910.38
  5. Step 5: Solve for x
    x = 125,062,910.38/11,356.18
  6. Step 6: Final answer
    x = 11,012.76

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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.