Home / 19,155-28,742.22-8,769.36

Finding the Fourth Proportional to 19,155, 28,742.22 and 8,769.36

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Solution

The fourth proportional to 19,155, 28,742.22 and 8,769.36 is: 13,158.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,155 : 28,742.22 = 8,769.36 : x
  2. Step 2: Convert to fraction form
    19,155/28,742.22 = 8,769.36/x
  3. Step 3: Cross multiply
    19,155x = 28,742.22 × 8,769.36
  4. Step 4: Simplify right side
    19,155x = 252,050,874.38
  5. Step 5: Solve for x
    x = 252,050,874.38/19,155
  6. Step 6: Final answer
    x = 13,158.49

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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.