Home / 9,891.44-13,650.18-5,415.18

Finding the Fourth Proportional to 9,891.44, 13,650.18 and 5,415.18

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Solution

The fourth proportional to 9,891.44, 13,650.18 and 5,415.18 is: 7,472.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,891.44 : 13,650.18 = 5,415.18 : x
  2. Step 2: Convert to fraction form
    9,891.44/13,650.18 = 5,415.18/x
  3. Step 3: Cross multiply
    9,891.44x = 13,650.18 × 5,415.18
  4. Step 4: Simplify right side
    9,891.44x = 73,918,130.54
  5. Step 5: Solve for x
    x = 73,918,130.54/9,891.44
  6. Step 6: Final answer
    x = 7,472.94

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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.