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Finding the Fourth Proportional to 19,491.03, 26,892 and 10,992.71

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Solution

The fourth proportional to 19,491.03, 26,892 and 10,992.71 is: 15,166.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,491.03 : 26,892 = 10,992.71 : x
  2. Step 2: Convert to fraction form
    19,491.03/26,892 = 10,992.71/x
  3. Step 3: Cross multiply
    19,491.03x = 26,892 × 10,992.71
  4. Step 4: Simplify right side
    19,491.03x = 295,616,024.55
  5. Step 5: Solve for x
    x = 295,616,024.55/19,491.03
  6. Step 6: Final answer
    x = 15,166.77

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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.