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Finding the Fourth Proportional to 19,449.78, 28,978.83 and 18,176.73

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Solution

The fourth proportional to 19,449.78, 28,978.83 and 18,176.73 is: 27,082.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,449.78 : 28,978.83 = 18,176.73 : x
  2. Step 2: Convert to fraction form
    19,449.78/28,978.83 = 18,176.73/x
  3. Step 3: Cross multiply
    19,449.78x = 28,978.83 × 18,176.73
  4. Step 4: Simplify right side
    19,449.78x = 526,740,368.63
  5. Step 5: Solve for x
    x = 526,740,368.63/19,449.78
  6. Step 6: Final answer
    x = 27,082.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.