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Finding the Fourth Proportional to 25,959.20, 38,938.80 and 14,266.08

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Solution

The fourth proportional to 25,959.20, 38,938.80 and 14,266.08 is: 21,399.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,959.20 : 38,938.80 = 14,266.08 : x
  2. Step 2: Convert to fraction form
    25,959.20/38,938.80 = 14,266.08/x
  3. Step 3: Cross multiply
    25,959.20x = 38,938.80 × 14,266.08
  4. Step 4: Simplify right side
    25,959.20x = 555,504,035.90
  5. Step 5: Solve for x
    x = 555,504,035.90/25,959.20
  6. Step 6: Final answer
    x = 21,399.12

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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.