Home / 11,379.16-15,698.88-8,402.08

Finding the Fourth Proportional to 11,379.16, 15,698.88 and 8,402.08

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Solution

The fourth proportional to 11,379.16, 15,698.88 and 8,402.08 is: 11,591.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,379.16 : 15,698.88 = 8,402.08 : x
  2. Step 2: Convert to fraction form
    11,379.16/15,698.88 = 8,402.08/x
  3. Step 3: Cross multiply
    11,379.16x = 15,698.88 × 8,402.08
  4. Step 4: Simplify right side
    11,379.16x = 131,903,245.67
  5. Step 5: Solve for x
    x = 131,903,245.67/11,379.16
  6. Step 6: Final answer
    x = 11,591.65

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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.