Home / 13,919.64-20,883.12-6,899.38

Finding the Fourth Proportional to 13,919.64, 20,883.12 and 6,899.38

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Solution

The fourth proportional to 13,919.64, 20,883.12 and 6,899.38 is: 10,350.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,919.64 : 20,883.12 = 6,899.38 : x
  2. Step 2: Convert to fraction form
    13,919.64/20,883.12 = 6,899.38/x
  3. Step 3: Cross multiply
    13,919.64x = 20,883.12 × 6,899.38
  4. Step 4: Simplify right side
    13,919.64x = 144,080,580.47
  5. Step 5: Solve for x
    x = 144,080,580.47/13,919.64
  6. Step 6: Final answer
    x = 10,350.88

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1.5x scale

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.