Home / 11,131.20-15,357.33-6,415.38

Finding the Fourth Proportional to 11,131.20, 15,357.33 and 6,415.38

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Solution

The fourth proportional to 11,131.20, 15,357.33 and 6,415.38 is: 8,851.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,131.20 : 15,357.33 = 6,415.38 : x
  2. Step 2: Convert to fraction form
    11,131.20/15,357.33 = 6,415.38/x
  3. Step 3: Cross multiply
    11,131.20x = 15,357.33 × 6,415.38
  4. Step 4: Simplify right side
    11,131.20x = 98,523,107.74
  5. Step 5: Solve for x
    x = 98,523,107.74/11,131.20
  6. Step 6: Final answer
    x = 8,851.08

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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.