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Finding the Fourth Proportional to 25,691.40, 36,019.80 and 25,691.40

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Solution

The fourth proportional to 25,691.40, 36,019.80 and 25,691.40 is: 36,019.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,691.40 : 36,019.80 = 25,691.40 : x
  2. Step 2: Convert to fraction form
    25,691.40/36,019.80 = 25,691.40/x
  3. Step 3: Cross multiply
    25,691.40x = 36,019.80 × 25,691.40
  4. Step 4: Simplify right side
    25,691.40x = 925,399,089.72
  5. Step 5: Solve for x
    x = 925,399,089.72/25,691.40
  6. Step 6: Final answer
    x = 36,019.80

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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.