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Finding the Fourth Proportional to 17,421.80, 26,094.30 and 15,117.80

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Solution

The fourth proportional to 17,421.80, 26,094.30 and 15,117.80 is: 22,643.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,421.80 : 26,094.30 = 15,117.80 : x
  2. Step 2: Convert to fraction form
    17,421.80/26,094.30 = 15,117.80/x
  3. Step 3: Cross multiply
    17,421.80x = 26,094.30 × 15,117.80
  4. Step 4: Simplify right side
    17,421.80x = 394,488,408.54
  5. Step 5: Solve for x
    x = 394,488,408.54/17,421.80
  6. Step 6: Final answer
    x = 22,643.38

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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.