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Finding the Fourth Proportional to 20,251.92, 27,946.52 and 12,698.57

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Solution

The fourth proportional to 20,251.92, 27,946.52 and 12,698.57 is: 17,523.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,251.92 : 27,946.52 = 12,698.57 : x
  2. Step 2: Convert to fraction form
    20,251.92/27,946.52 = 12,698.57/x
  3. Step 3: Cross multiply
    20,251.92x = 27,946.52 × 12,698.57
  4. Step 4: Simplify right side
    20,251.92x = 354,880,894.47
  5. Step 5: Solve for x
    x = 354,880,894.47/20,251.92
  6. Step 6: Final answer
    x = 17,523.32

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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.