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Finding the Fourth Proportional to 25,697.20, 38,632.20 and 21,895.60

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Solution

The fourth proportional to 25,697.20, 38,632.20 and 21,895.60 is: 32,917.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,697.20 : 38,632.20 = 21,895.60 : x
  2. Step 2: Convert to fraction form
    25,697.20/38,632.20 = 21,895.60/x
  3. Step 3: Cross multiply
    25,697.20x = 38,632.20 × 21,895.60
  4. Step 4: Simplify right side
    25,697.20x = 845,875,198.32
  5. Step 5: Solve for x
    x = 845,875,198.32/25,697.20
  6. Step 6: Final answer
    x = 32,917.02

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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.