Home / 12,351.72-17,045.28-6,686.48

Finding the Fourth Proportional to 12,351.72, 17,045.28 and 6,686.48

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Solution

The fourth proportional to 12,351.72, 17,045.28 and 6,686.48 is: 9,227.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,351.72 : 17,045.28 = 6,686.48 : x
  2. Step 2: Convert to fraction form
    12,351.72/17,045.28 = 6,686.48/x
  3. Step 3: Cross multiply
    12,351.72x = 17,045.28 × 6,686.48
  4. Step 4: Simplify right side
    12,351.72x = 113,972,923.81
  5. Step 5: Solve for x
    x = 113,972,923.81/12,351.72
  6. Step 6: Final answer
    x = 9,227.29

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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.