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Finding the Fourth Proportional to 25,490.62, 38,235.93 and 9,911.89

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Solution

The fourth proportional to 25,490.62, 38,235.93 and 9,911.89 is: 14,867.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,490.62 : 38,235.93 = 9,911.89 : x
  2. Step 2: Convert to fraction form
    25,490.62/38,235.93 = 9,911.89/x
  3. Step 3: Cross multiply
    25,490.62x = 38,235.93 × 9,911.89
  4. Step 4: Simplify right side
    25,490.62x = 378,990,091.47
  5. Step 5: Solve for x
    x = 378,990,091.47/25,490.62
  6. Step 6: Final answer
    x = 14,867.83

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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.