Home / 11,505.27-15,878.69-6,469.71

Finding the Fourth Proportional to 11,505.27, 15,878.69 and 6,469.71

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Solution

The fourth proportional to 11,505.27, 15,878.69 and 6,469.71 is: 8,929.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,505.27 : 15,878.69 = 6,469.71 : x
  2. Step 2: Convert to fraction form
    11,505.27/15,878.69 = 6,469.71/x
  3. Step 3: Cross multiply
    11,505.27x = 15,878.69 × 6,469.71
  4. Step 4: Simplify right side
    11,505.27x = 102,730,519.48
  5. Step 5: Solve for x
    x = 102,730,519.48/11,505.27
  6. Step 6: Final answer
    x = 8,929.00

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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.