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Finding the Fourth Proportional to 21,816.60, 32,720.22 and 9,967.02

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Solution

The fourth proportional to 21,816.60, 32,720.22 and 9,967.02 is: 14,948.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,816.60 : 32,720.22 = 9,967.02 : x
  2. Step 2: Convert to fraction form
    21,816.60/32,720.22 = 9,967.02/x
  3. Step 3: Cross multiply
    21,816.60x = 32,720.22 × 9,967.02
  4. Step 4: Simplify right side
    21,816.60x = 326,123,087.14
  5. Step 5: Solve for x
    x = 326,123,087.14/21,816.60
  6. Step 6: Final answer
    x = 14,948.39

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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.