Home / 19,628.10-29,442.15-9,786.60

Finding the Fourth Proportional to 19,628.10, 29,442.15 and 9,786.60

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Solution

The fourth proportional to 19,628.10, 29,442.15 and 9,786.60 is: 14,679.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,628.10 : 29,442.15 = 9,786.60 : x
  2. Step 2: Convert to fraction form
    19,628.10/29,442.15 = 9,786.60/x
  3. Step 3: Cross multiply
    19,628.10x = 29,442.15 × 9,786.60
  4. Step 4: Simplify right side
    19,628.10x = 288,138,545.19
  5. Step 5: Solve for x
    x = 288,138,545.19/19,628.10
  6. Step 6: Final answer
    x = 14,679.90

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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.