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Finding the Fourth Proportional to 21,685, 32,532.54 and 11,151.04

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Solution

The fourth proportional to 21,685, 32,532.54 and 11,151.04 is: 16,729.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,685 : 32,532.54 = 11,151.04 : x
  2. Step 2: Convert to fraction form
    21,685/32,532.54 = 11,151.04/x
  3. Step 3: Cross multiply
    21,685x = 32,532.54 × 11,151.04
  4. Step 4: Simplify right side
    21,685x = 362,771,654.84
  5. Step 5: Solve for x
    x = 362,771,654.84/21,685
  6. Step 6: Final answer
    x = 16,729.15

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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.