Home / 11,079.12-15,296.64-8,440.08

Finding the Fourth Proportional to 11,079.12, 15,296.64 and 8,440.08

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Solution

The fourth proportional to 11,079.12, 15,296.64 and 8,440.08 is: 11,652.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,079.12 : 15,296.64 = 8,440.08 : x
  2. Step 2: Convert to fraction form
    11,079.12/15,296.64 = 8,440.08/x
  3. Step 3: Cross multiply
    11,079.12x = 15,296.64 × 8,440.08
  4. Step 4: Simplify right side
    11,079.12x = 129,104,865.33
  5. Step 5: Solve for x
    x = 129,104,865.33/11,079.12
  6. Step 6: Final answer
    x = 11,652.99

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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.