Home / 20,689.45-31,034.31-14,099.29

Finding the Fourth Proportional to 20,689.45, 31,034.31 and 14,099.29

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Solution

The fourth proportional to 20,689.45, 31,034.31 and 14,099.29 is: 21,149.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,689.45 : 31,034.31 = 14,099.29 : x
  2. Step 2: Convert to fraction form
    20,689.45/31,034.31 = 14,099.29/x
  3. Step 3: Cross multiply
    20,689.45x = 31,034.31 × 14,099.29
  4. Step 4: Simplify right side
    20,689.45x = 437,561,736.64
  5. Step 5: Solve for x
    x = 437,561,736.64/20,689.45
  6. Step 6: Final answer
    x = 21,149.03

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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.