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Finding the Fourth Proportional to 19,155.16, 28,723 and 8,758

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Solution

The fourth proportional to 19,155.16, 28,723 and 8,758 is: 13,132.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,155.16 : 28,723 = 8,758 : x
  2. Step 2: Convert to fraction form
    19,155.16/28,723 = 8,758/x
  3. Step 3: Cross multiply
    19,155.16x = 28,723 × 8,758
  4. Step 4: Simplify right side
    19,155.16x = 251,556,034
  5. Step 5: Solve for x
    x = 251,556,034/19,155.16
  6. Step 6: Final answer
    x = 13,132.55

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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.