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Finding the Fourth Proportional to 16,965.48, 25,446.94 and 8,640.28

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Solution

The fourth proportional to 16,965.48, 25,446.94 and 8,640.28 is: 12,959.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,965.48 : 25,446.94 = 8,640.28 : x
  2. Step 2: Convert to fraction form
    16,965.48/25,446.94 = 8,640.28/x
  3. Step 3: Cross multiply
    16,965.48x = 25,446.94 × 8,640.28
  4. Step 4: Simplify right side
    16,965.48x = 219,868,686.74
  5. Step 5: Solve for x
    x = 219,868,686.74/16,965.48
  6. Step 6: Final answer
    x = 12,959.77

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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.