Home / 15,187.38-20,958.60-8,899.75

Finding the Fourth Proportional to 15,187.38, 20,958.60 and 8,899.75

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Solution

The fourth proportional to 15,187.38, 20,958.60 and 8,899.75 is: 12,281.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,187.38 : 20,958.60 = 8,899.75 : x
  2. Step 2: Convert to fraction form
    15,187.38/20,958.60 = 8,899.75/x
  3. Step 3: Cross multiply
    15,187.38x = 20,958.60 × 8,899.75
  4. Step 4: Simplify right side
    15,187.38x = 186,526,300.35
  5. Step 5: Solve for x
    x = 186,526,300.35/15,187.38
  6. Step 6: Final answer
    x = 12,281.66

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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.