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Finding the Fourth Proportional to 18,295.39, 25,247.64 and 9,911.89

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Solution

The fourth proportional to 18,295.39, 25,247.64 and 9,911.89 is: 13,678.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,295.39 : 25,247.64 = 9,911.89 : x
  2. Step 2: Convert to fraction form
    18,295.39/25,247.64 = 9,911.89/x
  3. Step 3: Cross multiply
    18,295.39x = 25,247.64 × 9,911.89
  4. Step 4: Simplify right side
    18,295.39x = 250,251,830.44
  5. Step 5: Solve for x
    x = 250,251,830.44/18,295.39
  6. Step 6: Final answer
    x = 13,678.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.