Home / 11,357.28-15,669.40-6,879.60

Finding the Fourth Proportional to 11,357.28, 15,669.40 and 6,879.60

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Solution

The fourth proportional to 11,357.28, 15,669.40 and 6,879.60 is: 9,491.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,357.28 : 15,669.40 = 6,879.60 : x
  2. Step 2: Convert to fraction form
    11,357.28/15,669.40 = 6,879.60/x
  3. Step 3: Cross multiply
    11,357.28x = 15,669.40 × 6,879.60
  4. Step 4: Simplify right side
    11,357.28x = 107,799,204.24
  5. Step 5: Solve for x
    x = 107,799,204.24/11,357.28
  6. Step 6: Final answer
    x = 9,491.64

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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.