Home / 11,423.43-15,764.69-6,387.86

Finding the Fourth Proportional to 11,423.43, 15,764.69 and 6,387.86

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Solution

The fourth proportional to 11,423.43, 15,764.69 and 6,387.86 is: 8,815.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,423.43 : 15,764.69 = 6,387.86 : x
  2. Step 2: Convert to fraction form
    11,423.43/15,764.69 = 6,387.86/x
  3. Step 3: Cross multiply
    11,423.43x = 15,764.69 × 6,387.86
  4. Step 4: Simplify right side
    11,423.43x = 100,702,632.66
  5. Step 5: Solve for x
    x = 100,702,632.66/11,423.43
  6. Step 6: Final answer
    x = 8,815.45

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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.