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Finding the Fourth Proportional to 14,950.68, 20,631.51 and 8,578.34

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Solution

The fourth proportional to 14,950.68, 20,631.51 and 8,578.34 is: 11,837.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,950.68 : 20,631.51 = 8,578.34 : x
  2. Step 2: Convert to fraction form
    14,950.68/20,631.51 = 8,578.34/x
  3. Step 3: Cross multiply
    14,950.68x = 20,631.51 × 8,578.34
  4. Step 4: Simplify right side
    14,950.68x = 176,984,107.49
  5. Step 5: Solve for x
    x = 176,984,107.49/14,950.68
  6. Step 6: Final answer
    x = 11,837.86

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1.5x scale

Why These Related Problems?

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