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Finding the Fourth Proportional to 21,863.34, 32,795.01 and 8,718.66

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Solution

The fourth proportional to 21,863.34, 32,795.01 and 8,718.66 is: 13,077.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,863.34 : 32,795.01 = 8,718.66 : x
  2. Step 2: Convert to fraction form
    21,863.34/32,795.01 = 8,718.66/x
  3. Step 3: Cross multiply
    21,863.34x = 32,795.01 × 8,718.66
  4. Step 4: Simplify right side
    21,863.34x = 285,928,541.89
  5. Step 5: Solve for x
    x = 285,928,541.89/21,863.34
  6. Step 6: Final answer
    x = 13,077.99

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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.