Home / 10,909.08-15,052.89-6,128.11

Finding the Fourth Proportional to 10,909.08, 15,052.89 and 6,128.11

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Solution

The fourth proportional to 10,909.08, 15,052.89 and 6,128.11 is: 8,455.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,909.08 : 15,052.89 = 6,128.11 : x
  2. Step 2: Convert to fraction form
    10,909.08/15,052.89 = 6,128.11/x
  3. Step 3: Cross multiply
    10,909.08x = 15,052.89 × 6,128.11
  4. Step 4: Simplify right side
    10,909.08x = 92,245,765.74
  5. Step 5: Solve for x
    x = 92,245,765.74/10,909.08
  6. Step 6: Final answer
    x = 8,455.87

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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.