Home / 9,111.28-13,659.36-6,343.36

Finding the Fourth Proportional to 9,111.28, 13,659.36 and 6,343.36

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Solution

The fourth proportional to 9,111.28, 13,659.36 and 6,343.36 is: 9,509.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,111.28 : 13,659.36 = 6,343.36 : x
  2. Step 2: Convert to fraction form
    9,111.28/13,659.36 = 6,343.36/x
  3. Step 3: Cross multiply
    9,111.28x = 13,659.36 × 6,343.36
  4. Step 4: Simplify right side
    9,111.28x = 86,646,237.85
  5. Step 5: Solve for x
    x = 86,646,237.85/9,111.28
  6. Step 6: Final answer
    x = 9,509.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.