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Finding the Fourth Proportional to 19,251.84, 28,864.80 and 9,880.14

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Solution

The fourth proportional to 19,251.84, 28,864.80 and 9,880.14 is: 14,813.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,251.84 : 28,864.80 = 9,880.14 : x
  2. Step 2: Convert to fraction form
    19,251.84/28,864.80 = 9,880.14/x
  3. Step 3: Cross multiply
    19,251.84x = 28,864.80 × 9,880.14
  4. Step 4: Simplify right side
    19,251.84x = 285,188,265.07
  5. Step 5: Solve for x
    x = 285,188,265.07/19,251.84
  6. Step 6: Final answer
    x = 14,813.56

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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.