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Finding the Fourth Proportional to 19,959.95, 29,950.32 and 8,874.56

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Solution

The fourth proportional to 19,959.95, 29,950.32 and 8,874.56 is: 13,316.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,959.95 : 29,950.32 = 8,874.56 : x
  2. Step 2: Convert to fraction form
    19,959.95/29,950.32 = 8,874.56/x
  3. Step 3: Cross multiply
    19,959.95x = 29,950.32 × 8,874.56
  4. Step 4: Simplify right side
    19,959.95x = 265,795,911.86
  5. Step 5: Solve for x
    x = 265,795,911.86/19,959.95
  6. Step 6: Final answer
    x = 13,316.46

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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.