Home / 11,306.72-15,614.16-7,778.36

Finding the Fourth Proportional to 11,306.72, 15,614.16 and 7,778.36

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Solution

The fourth proportional to 11,306.72, 15,614.16 and 7,778.36 is: 10,741.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,306.72 : 15,614.16 = 7,778.36 : x
  2. Step 2: Convert to fraction form
    11,306.72/15,614.16 = 7,778.36/x
  3. Step 3: Cross multiply
    11,306.72x = 15,614.16 × 7,778.36
  4. Step 4: Simplify right side
    11,306.72x = 121,452,557.58
  5. Step 5: Solve for x
    x = 121,452,557.58/11,306.72
  6. Step 6: Final answer
    x = 10,741.63

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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.