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Finding the Fourth Proportional to 15,095.07, 20,830.82 and 8,380.49

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Solution

The fourth proportional to 15,095.07, 20,830.82 and 8,380.49 is: 11,564.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,095.07 : 20,830.82 = 8,380.49 : x
  2. Step 2: Convert to fraction form
    15,095.07/20,830.82 = 8,380.49/x
  3. Step 3: Cross multiply
    15,095.07x = 20,830.82 × 8,380.49
  4. Step 4: Simplify right side
    15,095.07x = 174,572,332.65
  5. Step 5: Solve for x
    x = 174,572,332.65/15,095.07
  6. Step 6: Final answer
    x = 11,564.86

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.