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Finding the Fourth Proportional to 20,473.29, 30,696.77 and 8,634.74

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Solution

The fourth proportional to 20,473.29, 30,696.77 and 8,634.74 is: 12,946.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,473.29 : 30,696.77 = 8,634.74 : x
  2. Step 2: Convert to fraction form
    20,473.29/30,696.77 = 8,634.74/x
  3. Step 3: Cross multiply
    20,473.29x = 30,696.77 × 8,634.74
  4. Step 4: Simplify right side
    20,473.29x = 265,058,495.89
  5. Step 5: Solve for x
    x = 265,058,495.89/20,473.29
  6. Step 6: Final answer
    x = 12,946.55

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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.