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Finding the Fourth Proportional to 14,939.31, 20,618.24 and 14,480.31

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Solution

The fourth proportional to 14,939.31, 20,618.24 and 14,480.31 is: 19,984.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,939.31 : 20,618.24 = 14,480.31 : x
  2. Step 2: Convert to fraction form
    14,939.31/20,618.24 = 14,480.31/x
  3. Step 3: Cross multiply
    14,939.31x = 20,618.24 × 14,480.31
  4. Step 4: Simplify right side
    14,939.31x = 298,558,434.45
  5. Step 5: Solve for x
    x = 298,558,434.45/14,939.31
  6. Step 6: Final answer
    x = 19,984.75

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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.