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Finding the Fourth Proportional to 21,914.47, 32,870.08 and 8,758.45

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Solution

The fourth proportional to 21,914.47, 32,870.08 and 8,758.45 is: 13,137.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,914.47 : 32,870.08 = 8,758.45 : x
  2. Step 2: Convert to fraction form
    21,914.47/32,870.08 = 8,758.45/x
  3. Step 3: Cross multiply
    21,914.47x = 32,870.08 × 8,758.45
  4. Step 4: Simplify right side
    21,914.47x = 287,890,952.18
  5. Step 5: Solve for x
    x = 287,890,952.18/21,914.47
  6. Step 6: Final answer
    x = 13,137.03

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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.