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Finding the Fourth Proportional to 18,965.46, 28,447.96 and 4,924.24

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Solution

The fourth proportional to 18,965.46, 28,447.96 and 4,924.24 is: 7,386.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,965.46 : 28,447.96 = 4,924.24 : x
  2. Step 2: Convert to fraction form
    18,965.46/28,447.96 = 4,924.24/x
  3. Step 3: Cross multiply
    18,965.46x = 28,447.96 × 4,924.24
  4. Step 4: Simplify right side
    18,965.46x = 140,084,582.55
  5. Step 5: Solve for x
    x = 140,084,582.55/18,965.46
  6. Step 6: Final answer
    x = 7,386.30

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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.