Home / 20,842.20-31,214.70-14,232.60

Finding the Fourth Proportional to 20,842.20, 31,214.70 and 14,232.60

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Solution

The fourth proportional to 20,842.20, 31,214.70 and 14,232.60 is: 21,315.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,842.20 : 31,214.70 = 14,232.60 : x
  2. Step 2: Convert to fraction form
    20,842.20/31,214.70 = 14,232.60/x
  3. Step 3: Cross multiply
    20,842.20x = 31,214.70 × 14,232.60
  4. Step 4: Simplify right side
    20,842.20x = 444,266,339.22
  5. Step 5: Solve for x
    x = 444,266,339.22/20,842.20
  6. Step 6: Final answer
    x = 21,315.71

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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.