Home / 11,107.08-15,331.20-6,394.56

Finding the Fourth Proportional to 11,107.08, 15,331.20 and 6,394.56

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Solution

The fourth proportional to 11,107.08, 15,331.20 and 6,394.56 is: 8,826.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,107.08 : 15,331.20 = 6,394.56 : x
  2. Step 2: Convert to fraction form
    11,107.08/15,331.20 = 6,394.56/x
  3. Step 3: Cross multiply
    11,107.08x = 15,331.20 × 6,394.56
  4. Step 4: Simplify right side
    11,107.08x = 98,036,278.27
  5. Step 5: Solve for x
    x = 98,036,278.27/11,107.08
  6. Step 6: Final answer
    x = 8,826.47

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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.