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Finding the Fourth Proportional to 20,251.16, 30,335.06 and 17,917.23

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Solution

The fourth proportional to 20,251.16, 30,335.06 and 17,917.23 is: 26,838.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,251.16 : 30,335.06 = 17,917.23 : x
  2. Step 2: Convert to fraction form
    20,251.16/30,335.06 = 17,917.23/x
  3. Step 3: Cross multiply
    20,251.16x = 30,335.06 × 17,917.23
  4. Step 4: Simplify right side
    20,251.16x = 543,520,048.90
  5. Step 5: Solve for x
    x = 543,520,048.90/20,251.16
  6. Step 6: Final answer
    x = 26,838.95

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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.