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Finding the Fourth Proportional to 21,953.84, 32,931.84 and 6,372.68

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Solution

The fourth proportional to 21,953.84, 32,931.84 and 6,372.68 is: 9,559.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,953.84 : 32,931.84 = 6,372.68 : x
  2. Step 2: Convert to fraction form
    21,953.84/32,931.84 = 6,372.68/x
  3. Step 3: Cross multiply
    21,953.84x = 32,931.84 × 6,372.68
  4. Step 4: Simplify right side
    21,953.84x = 209,864,078.13
  5. Step 5: Solve for x
    x = 209,864,078.13/21,953.84
  6. Step 6: Final answer
    x = 9,559.33

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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.