Home / 20,470.40-28,250.16-11,517.44

Finding the Fourth Proportional to 20,470.40, 28,250.16 and 11,517.44

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Solution

The fourth proportional to 20,470.40, 28,250.16 and 11,517.44 is: 15,894.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,470.40 : 28,250.16 = 11,517.44 : x
  2. Step 2: Convert to fraction form
    20,470.40/28,250.16 = 11,517.44/x
  3. Step 3: Cross multiply
    20,470.40x = 28,250.16 × 11,517.44
  4. Step 4: Simplify right side
    20,470.40x = 325,369,522.79
  5. Step 5: Solve for x
    x = 325,369,522.79/20,470.40
  6. Step 6: Final answer
    x = 15,894.63

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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.