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Finding the Fourth Proportional to 19,446.78, 26,836.90 and 11,488.99

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Solution

The fourth proportional to 19,446.78, 26,836.90 and 11,488.99 is: 15,855.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,446.78 : 26,836.90 = 11,488.99 : x
  2. Step 2: Convert to fraction form
    19,446.78/26,836.90 = 11,488.99/x
  3. Step 3: Cross multiply
    19,446.78x = 26,836.90 × 11,488.99
  4. Step 4: Simplify right side
    19,446.78x = 308,328,894.86
  5. Step 5: Solve for x
    x = 308,328,894.86/19,446.78
  6. Step 6: Final answer
    x = 15,855.01

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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.