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Finding the Fourth Proportional to 25,808.32, 38,712.72 and 9,168.64

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Solution

The fourth proportional to 25,808.32, 38,712.72 and 9,168.64 is: 13,753.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,808.32 : 38,712.72 = 9,168.64 : x
  2. Step 2: Convert to fraction form
    25,808.32/38,712.72 = 9,168.64/x
  3. Step 3: Cross multiply
    25,808.32x = 38,712.72 × 9,168.64
  4. Step 4: Simplify right side
    25,808.32x = 354,942,993.10
  5. Step 5: Solve for x
    x = 354,942,993.10/25,808.32
  6. Step 6: Final answer
    x = 13,753.05

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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.