Home / 15,213.32-20,994.20-8,499.60

Finding the Fourth Proportional to 15,213.32, 20,994.20 and 8,499.60

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Solution

The fourth proportional to 15,213.32, 20,994.20 and 8,499.60 is: 11,729.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,213.32 : 20,994.20 = 8,499.60 : x
  2. Step 2: Convert to fraction form
    15,213.32/20,994.20 = 8,499.60/x
  3. Step 3: Cross multiply
    15,213.32x = 20,994.20 × 8,499.60
  4. Step 4: Simplify right side
    15,213.32x = 178,442,302.32
  5. Step 5: Solve for x
    x = 178,442,302.32/15,213.32
  6. Step 6: Final answer
    x = 11,729.35

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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.