Home / 19,109.16-28,650.65-9,731.02

Finding the Fourth Proportional to 19,109.16, 28,650.65 and 9,731.02

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Solution

The fourth proportional to 19,109.16, 28,650.65 and 9,731.02 is: 14,589.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,109.16 : 28,650.65 = 9,731.02 : x
  2. Step 2: Convert to fraction form
    19,109.16/28,650.65 = 9,731.02/x
  3. Step 3: Cross multiply
    19,109.16x = 28,650.65 × 9,731.02
  4. Step 4: Simplify right side
    19,109.16x = 278,800,023.84
  5. Step 5: Solve for x
    x = 278,800,023.84/19,109.16
  6. Step 6: Final answer
    x = 14,589.87

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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.