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Finding the Fourth Proportional to 25,959.20, 38,938.80 and 17,664.80

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Solution

The fourth proportional to 25,959.20, 38,938.80 and 17,664.80 is: 26,497.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,959.20 : 38,938.80 = 17,664.80 : x
  2. Step 2: Convert to fraction form
    25,959.20/38,938.80 = 17,664.80/x
  3. Step 3: Cross multiply
    25,959.20x = 38,938.80 × 17,664.80
  4. Step 4: Simplify right side
    25,959.20x = 687,846,114.24
  5. Step 5: Solve for x
    x = 687,846,114.24/25,959.20
  6. Step 6: Final answer
    x = 26,497.20

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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.