Home / 13,997.90-19,310.29-8,958.08

Finding the Fourth Proportional to 13,997.90, 19,310.29 and 8,958.08

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Solution

The fourth proportional to 13,997.90, 19,310.29 and 8,958.08 is: 12,357.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,997.90 : 19,310.29 = 8,958.08 : x
  2. Step 2: Convert to fraction form
    13,997.90/19,310.29 = 8,958.08/x
  3. Step 3: Cross multiply
    13,997.90x = 19,310.29 × 8,958.08
  4. Step 4: Simplify right side
    13,997.90x = 172,983,026.09
  5. Step 5: Solve for x
    x = 172,983,026.09/13,997.90
  6. Step 6: Final answer
    x = 12,357.79

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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.