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Finding the Fourth Proportional to 21,954.80, 32,948.40 and 8,816.60

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Solution

The fourth proportional to 21,954.80, 32,948.40 and 8,816.60 is: 13,231.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,954.80 : 32,948.40 = 8,816.60 : x
  2. Step 2: Convert to fraction form
    21,954.80/32,948.40 = 8,816.60/x
  3. Step 3: Cross multiply
    21,954.80x = 32,948.40 × 8,816.60
  4. Step 4: Simplify right side
    21,954.80x = 290,492,863.44
  5. Step 5: Solve for x
    x = 290,492,863.44/21,954.80
  6. Step 6: Final answer
    x = 13,231.41

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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.