Home / 11,143.86-15,373.62-6,665.40

Finding the Fourth Proportional to 11,143.86, 15,373.62 and 6,665.40

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Solution

The fourth proportional to 11,143.86, 15,373.62 and 6,665.40 is: 9,195.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,143.86 : 15,373.62 = 6,665.40 : x
  2. Step 2: Convert to fraction form
    11,143.86/15,373.62 = 6,665.40/x
  3. Step 3: Cross multiply
    11,143.86x = 15,373.62 × 6,665.40
  4. Step 4: Simplify right side
    11,143.86x = 102,471,326.75
  5. Step 5: Solve for x
    x = 102,471,326.75/11,143.86
  6. Step 6: Final answer
    x = 9,195.32

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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.