Home / 15,165.60-20,928.48-8,876.72

Finding the Fourth Proportional to 15,165.60, 20,928.48 and 8,876.72

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Solution

The fourth proportional to 15,165.60, 20,928.48 and 8,876.72 is: 12,249.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,165.60 : 20,928.48 = 8,876.72 : x
  2. Step 2: Convert to fraction form
    15,165.60/20,928.48 = 8,876.72/x
  3. Step 3: Cross multiply
    15,165.60x = 20,928.48 × 8,876.72
  4. Step 4: Simplify right side
    15,165.60x = 185,776,256.99
  5. Step 5: Solve for x
    x = 185,776,256.99/15,165.60
  6. Step 6: Final answer
    x = 12,249.85

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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.