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Finding the Fourth Proportional to 17,719.38, 26,542.62 and 12,798.90

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Solution

The fourth proportional to 17,719.38, 26,542.62 and 12,798.90 is: 19,172.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,719.38 : 26,542.62 = 12,798.90 : x
  2. Step 2: Convert to fraction form
    17,719.38/26,542.62 = 12,798.90/x
  3. Step 3: Cross multiply
    17,719.38x = 26,542.62 × 12,798.90
  4. Step 4: Simplify right side
    17,719.38x = 339,716,339.12
  5. Step 5: Solve for x
    x = 339,716,339.12/17,719.38
  6. Step 6: Final answer
    x = 19,172.02

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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.