Home / 11,319.51-15,610.05-6,781.48

Finding the Fourth Proportional to 11,319.51, 15,610.05 and 6,781.48

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Solution

The fourth proportional to 11,319.51, 15,610.05 and 6,781.48 is: 9,351.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,319.51 : 15,610.05 = 6,781.48 : x
  2. Step 2: Convert to fraction form
    11,319.51/15,610.05 = 6,781.48/x
  3. Step 3: Cross multiply
    11,319.51x = 15,610.05 × 6,781.48
  4. Step 4: Simplify right side
    11,319.51x = 105,859,163.82
  5. Step 5: Solve for x
    x = 105,859,163.82/11,319.51
  6. Step 6: Final answer
    x = 9,351.92

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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.