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Finding the Fourth Proportional to 17,937.39, 26,920.13 and 12,429.39

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Solution

The fourth proportional to 17,937.39, 26,920.13 and 12,429.39 is: 18,653.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,937.39 : 26,920.13 = 12,429.39 : x
  2. Step 2: Convert to fraction form
    17,937.39/26,920.13 = 12,429.39/x
  3. Step 3: Cross multiply
    17,937.39x = 26,920.13 × 12,429.39
  4. Step 4: Simplify right side
    17,937.39x = 334,600,732.47
  5. Step 5: Solve for x
    x = 334,600,732.47/17,937.39
  6. Step 6: Final answer
    x = 18,653.81

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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.