Home / 10,877.08-15,009.11-6,399.85

Finding the Fourth Proportional to 10,877.08, 15,009.11 and 6,399.85

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Solution

The fourth proportional to 10,877.08, 15,009.11 and 6,399.85 is: 8,831.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,877.08 : 15,009.11 = 6,399.85 : x
  2. Step 2: Convert to fraction form
    10,877.08/15,009.11 = 6,399.85/x
  3. Step 3: Cross multiply
    10,877.08x = 15,009.11 × 6,399.85
  4. Step 4: Simplify right side
    10,877.08x = 96,056,020.63
  5. Step 5: Solve for x
    x = 96,056,020.63/10,877.08
  6. Step 6: Final answer
    x = 8,831.05

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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.