Home / 14,884.40-20,540.70-8,170.64

Finding the Fourth Proportional to 14,884.40, 20,540.70 and 8,170.64

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Solution

The fourth proportional to 14,884.40, 20,540.70 and 8,170.64 is: 11,275.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,884.40 : 20,540.70 = 8,170.64 : x
  2. Step 2: Convert to fraction form
    14,884.40/20,540.70 = 8,170.64/x
  3. Step 3: Cross multiply
    14,884.40x = 20,540.70 × 8,170.64
  4. Step 4: Simplify right side
    14,884.40x = 167,830,716.40
  5. Step 5: Solve for x
    x = 167,830,716.40/14,884.40
  6. Step 6: Final answer
    x = 11,275.62

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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.