Home / 18,775.40-28,161.66-4,924.04

Finding the Fourth Proportional to 18,775.40, 28,161.66 and 4,924.04

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Solution

The fourth proportional to 18,775.40, 28,161.66 and 4,924.04 is: 7,385.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,775.40 : 28,161.66 = 4,924.04 : x
  2. Step 2: Convert to fraction form
    18,775.40/28,161.66 = 4,924.04/x
  3. Step 3: Cross multiply
    18,775.40x = 28,161.66 × 4,924.04
  4. Step 4: Simplify right side
    18,775.40x = 138,669,140.31
  5. Step 5: Solve for x
    x = 138,669,140.31/18,775.40
  6. Step 6: Final answer
    x = 7,385.68

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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.