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Finding the Fourth Proportional to 25,687.20, 36,031.20 and 25,687.20

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Solution

The fourth proportional to 25,687.20, 36,031.20 and 25,687.20 is: 36,031.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,687.20 : 36,031.20 = 25,687.20 : x
  2. Step 2: Convert to fraction form
    25,687.20/36,031.20 = 25,687.20/x
  3. Step 3: Cross multiply
    25,687.20x = 36,031.20 × 25,687.20
  4. Step 4: Simplify right side
    25,687.20x = 925,540,640.64
  5. Step 5: Solve for x
    x = 925,540,640.64/25,687.20
  6. Step 6: Final answer
    x = 36,031.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.