Home / 19,364.20-28,979.10-11,578.60

Finding the Fourth Proportional to 19,364.20, 28,979.10 and 11,578.60

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Solution

The fourth proportional to 19,364.20, 28,979.10 and 11,578.60 is: 17,327.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,364.20 : 28,979.10 = 11,578.60 : x
  2. Step 2: Convert to fraction form
    19,364.20/28,979.10 = 11,578.60/x
  3. Step 3: Cross multiply
    19,364.20x = 28,979.10 × 11,578.60
  4. Step 4: Simplify right side
    19,364.20x = 335,537,407.26
  5. Step 5: Solve for x
    x = 335,537,407.26/19,364.20
  6. Step 6: Final answer
    x = 17,327.72

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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.