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Finding the Fourth Proportional to 14,232.78, 19,640.61 and 7,945.02

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Solution

The fourth proportional to 14,232.78, 19,640.61 and 7,945.02 is: 10,963.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,232.78 : 19,640.61 = 7,945.02 : x
  2. Step 2: Convert to fraction form
    14,232.78/19,640.61 = 7,945.02/x
  3. Step 3: Cross multiply
    14,232.78x = 19,640.61 × 7,945.02
  4. Step 4: Simplify right side
    14,232.78x = 156,045,039.26
  5. Step 5: Solve for x
    x = 156,045,039.26/14,232.78
  6. Step 6: Final answer
    x = 10,963.78

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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.