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Finding the Fourth Proportional to 18,913.54, 28,387.83 and 9,560.17

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Solution

The fourth proportional to 18,913.54, 28,387.83 and 9,560.17 is: 14,349.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,913.54 : 28,387.83 = 9,560.17 : x
  2. Step 2: Convert to fraction form
    18,913.54/28,387.83 = 9,560.17/x
  3. Step 3: Cross multiply
    18,913.54x = 28,387.83 × 9,560.17
  4. Step 4: Simplify right side
    18,913.54x = 271,392,290.99
  5. Step 5: Solve for x
    x = 271,392,290.99/18,913.54
  6. Step 6: Final answer
    x = 14,349.10

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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.