Home / 19,179.20-28,731.14-17,089.40

Finding the Fourth Proportional to 19,179.20, 28,731.14 and 17,089.40

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Solution

The fourth proportional to 19,179.20, 28,731.14 and 17,089.40 is: 25,600.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,179.20 : 28,731.14 = 17,089.40 : x
  2. Step 2: Convert to fraction form
    19,179.20/28,731.14 = 17,089.40/x
  3. Step 3: Cross multiply
    19,179.20x = 28,731.14 × 17,089.40
  4. Step 4: Simplify right side
    19,179.20x = 490,997,943.92
  5. Step 5: Solve for x
    x = 490,997,943.92/19,179.20
  6. Step 6: Final answer
    x = 25,600.54

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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.