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Finding the Fourth Proportional to 17,920.78, 26,823.66 and 9,579.94

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Solution

The fourth proportional to 17,920.78, 26,823.66 and 9,579.94 is: 14,339.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,920.78 : 26,823.66 = 9,579.94 : x
  2. Step 2: Convert to fraction form
    17,920.78/26,823.66 = 9,579.94/x
  3. Step 3: Cross multiply
    17,920.78x = 26,823.66 × 9,579.94
  4. Step 4: Simplify right side
    17,920.78x = 256,969,053.38
  5. Step 5: Solve for x
    x = 256,969,053.38/17,920.78
  6. Step 6: Final answer
    x = 14,339.17

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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.