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Finding the Fourth Proportional to 10,874.48, 15,009.74 and 6,399.67

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Solution

The fourth proportional to 10,874.48, 15,009.74 and 6,399.67 is: 8,833.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,874.48 : 15,009.74 = 6,399.67 : x
  2. Step 2: Convert to fraction form
    10,874.48/15,009.74 = 6,399.67/x
  3. Step 3: Cross multiply
    10,874.48x = 15,009.74 × 6,399.67
  4. Step 4: Simplify right side
    10,874.48x = 96,057,382.79
  5. Step 5: Solve for x
    x = 96,057,382.79/10,874.48
  6. Step 6: Final answer
    x = 8,833.29

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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.