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Finding the Fourth Proportional to 25,321.52, 34,943.04 and 13,991.84

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Solution

The fourth proportional to 25,321.52, 34,943.04 and 13,991.84 is: 19,308.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,321.52 : 34,943.04 = 13,991.84 : x
  2. Step 2: Convert to fraction form
    25,321.52/34,943.04 = 13,991.84/x
  3. Step 3: Cross multiply
    25,321.52x = 34,943.04 × 13,991.84
  4. Step 4: Simplify right side
    25,321.52x = 488,917,424.79
  5. Step 5: Solve for x
    x = 488,917,424.79/25,321.52
  6. Step 6: Final answer
    x = 19,308.38

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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.