Home / 21,042.60-31,568.84-6,251.64

Finding the Fourth Proportional to 21,042.60, 31,568.84 and 6,251.64

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Solution

The fourth proportional to 21,042.60, 31,568.84 and 6,251.64 is: 9,378.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,042.60 : 31,568.84 = 6,251.64 : x
  2. Step 2: Convert to fraction form
    21,042.60/31,568.84 = 6,251.64/x
  3. Step 3: Cross multiply
    21,042.60x = 31,568.84 × 6,251.64
  4. Step 4: Simplify right side
    21,042.60x = 197,357,022.90
  5. Step 5: Solve for x
    x = 197,357,022.90/21,042.60
  6. Step 6: Final answer
    x = 9,378.93

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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.