Home / 11,119.38-15,345.23-6,405.18

Finding the Fourth Proportional to 11,119.38, 15,345.23 and 6,405.18

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Solution

The fourth proportional to 11,119.38, 15,345.23 and 6,405.18 is: 8,839.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,119.38 : 15,345.23 = 6,405.18 : x
  2. Step 2: Convert to fraction form
    11,119.38/15,345.23 = 6,405.18/x
  3. Step 3: Cross multiply
    11,119.38x = 15,345.23 × 6,405.18
  4. Step 4: Simplify right side
    11,119.38x = 98,288,960.29
  5. Step 5: Solve for x
    x = 98,288,960.29/11,119.38
  6. Step 6: Final answer
    x = 8,839.43

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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.