Home / 20,308.47-30,431.25-14,080.65

Finding the Fourth Proportional to 20,308.47, 30,431.25 and 14,080.65

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Solution

The fourth proportional to 20,308.47, 30,431.25 and 14,080.65 is: 21,099.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,308.47 : 30,431.25 = 14,080.65 : x
  2. Step 2: Convert to fraction form
    20,308.47/30,431.25 = 14,080.65/x
  3. Step 3: Cross multiply
    20,308.47x = 30,431.25 × 14,080.65
  4. Step 4: Simplify right side
    20,308.47x = 428,491,780.31
  5. Step 5: Solve for x
    x = 428,491,780.31/20,308.47
  6. Step 6: Final answer
    x = 21,099.17

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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.