Home / 20,625.75-28,470.92-12,242.25

Finding the Fourth Proportional to 20,625.75, 28,470.92 and 12,242.25

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Solution

The fourth proportional to 20,625.75, 28,470.92 and 12,242.25 is: 16,898.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,625.75 : 28,470.92 = 12,242.25 : x
  2. Step 2: Convert to fraction form
    20,625.75/28,470.92 = 12,242.25/x
  3. Step 3: Cross multiply
    20,625.75x = 28,470.92 × 12,242.25
  4. Step 4: Simplify right side
    20,625.75x = 348,548,059.16
  5. Step 5: Solve for x
    x = 348,548,059.16/20,625.75
  6. Step 6: Final answer
    x = 16,898.69

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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.