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Finding the Fourth Proportional to 21,381.84, 32,073.84 and 6,600.87

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Solution

The fourth proportional to 21,381.84, 32,073.84 and 6,600.87 is: 9,901.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,381.84 : 32,073.84 = 6,600.87 : x
  2. Step 2: Convert to fraction form
    21,381.84/32,073.84 = 6,600.87/x
  3. Step 3: Cross multiply
    21,381.84x = 32,073.84 × 6,600.87
  4. Step 4: Simplify right side
    21,381.84x = 211,715,248.24
  5. Step 5: Solve for x
    x = 211,715,248.24/21,381.84
  6. Step 6: Final answer
    x = 9,901.64

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1.5x scale

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.