Home / 12,424.80-17,135.28-9,743.52

Finding the Fourth Proportional to 12,424.80, 17,135.28 and 9,743.52

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Solution

The fourth proportional to 12,424.80, 17,135.28 and 9,743.52 is: 13,437.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,424.80 : 17,135.28 = 9,743.52 : x
  2. Step 2: Convert to fraction form
    12,424.80/17,135.28 = 9,743.52/x
  3. Step 3: Cross multiply
    12,424.80x = 17,135.28 × 9,743.52
  4. Step 4: Simplify right side
    12,424.80x = 166,957,943.39
  5. Step 5: Solve for x
    x = 166,957,943.39/12,424.80
  6. Step 6: Final answer
    x = 13,437.48

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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.