Home / 9,912.74-13,677.45-5,718.56

Finding the Fourth Proportional to 9,912.74, 13,677.45 and 5,718.56

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Solution

The fourth proportional to 9,912.74, 13,677.45 and 5,718.56 is: 7,890.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,912.74 : 13,677.45 = 5,718.56 : x
  2. Step 2: Convert to fraction form
    9,912.74/13,677.45 = 5,718.56/x
  3. Step 3: Cross multiply
    9,912.74x = 13,677.45 × 5,718.56
  4. Step 4: Simplify right side
    9,912.74x = 78,215,318.47
  5. Step 5: Solve for x
    x = 78,215,318.47/9,912.74
  6. Step 6: Final answer
    x = 7,890.38

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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.