Home / 8,952.86-13,431.60-8,390.05

Finding the Fourth Proportional to 8,952.86, 13,431.60 and 8,390.05

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Solution

The fourth proportional to 8,952.86, 13,431.60 and 8,390.05 is: 12,587.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,952.86 : 13,431.60 = 8,390.05 : x
  2. Step 2: Convert to fraction form
    8,952.86/13,431.60 = 8,390.05/x
  3. Step 3: Cross multiply
    8,952.86x = 13,431.60 × 8,390.05
  4. Step 4: Simplify right side
    8,952.86x = 112,691,766.74
  5. Step 5: Solve for x
    x = 112,691,766.74/8,952.86
  6. Step 6: Final answer
    x = 12,587.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.