Home / 13,919.31-19,197.81-8,617.05

Finding the Fourth Proportional to 13,919.31, 19,197.81 and 8,617.05

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Solution

The fourth proportional to 13,919.31, 19,197.81 and 8,617.05 is: 11,884.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,919.31 : 19,197.81 = 8,617.05 : x
  2. Step 2: Convert to fraction form
    13,919.31/19,197.81 = 8,617.05/x
  3. Step 3: Cross multiply
    13,919.31x = 19,197.81 × 8,617.05
  4. Step 4: Simplify right side
    13,919.31x = 165,428,488.66
  5. Step 5: Solve for x
    x = 165,428,488.66/13,919.31
  6. Step 6: Final answer
    x = 11,884.82

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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.