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Finding the Fourth Proportional to 15,186.67, 20,959.43 and 8,899.04

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Solution

The fourth proportional to 15,186.67, 20,959.43 and 8,899.04 is: 12,281.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,186.67 : 20,959.43 = 8,899.04 : x
  2. Step 2: Convert to fraction form
    15,186.67/20,959.43 = 8,899.04/x
  3. Step 3: Cross multiply
    15,186.67x = 20,959.43 × 8,899.04
  4. Step 4: Simplify right side
    15,186.67x = 186,518,813.85
  5. Step 5: Solve for x
    x = 186,518,813.85/15,186.67
  6. Step 6: Final answer
    x = 12,281.75

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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.