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Finding the Fourth Proportional to 18,873.82, 26,048.55 and 10,920.70

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Solution

The fourth proportional to 18,873.82, 26,048.55 and 10,920.70 is: 15,072.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,873.82 : 26,048.55 = 10,920.70 : x
  2. Step 2: Convert to fraction form
    18,873.82/26,048.55 = 10,920.70/x
  3. Step 3: Cross multiply
    18,873.82x = 26,048.55 × 10,920.70
  4. Step 4: Simplify right side
    18,873.82x = 284,468,399.99
  5. Step 5: Solve for x
    x = 284,468,399.99/18,873.82
  6. Step 6: Final answer
    x = 15,072.12

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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.