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Finding the Fourth Proportional to 17,399.99, 26,078.10 and 12,479.24

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Solution

The fourth proportional to 17,399.99, 26,078.10 and 12,479.24 is: 18,703.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,399.99 : 26,078.10 = 12,479.24 : x
  2. Step 2: Convert to fraction form
    17,399.99/26,078.10 = 12,479.24/x
  3. Step 3: Cross multiply
    17,399.99x = 26,078.10 × 12,479.24
  4. Step 4: Simplify right side
    17,399.99x = 325,434,738.25
  5. Step 5: Solve for x
    x = 325,434,738.25/17,399.99
  6. Step 6: Final answer
    x = 18,703.16

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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.