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Finding the Fourth Proportional to 21,924.60, 32,886.90 and 20,110.20

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Solution

The fourth proportional to 21,924.60, 32,886.90 and 20,110.20 is: 30,165.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,924.60 : 32,886.90 = 20,110.20 : x
  2. Step 2: Convert to fraction form
    21,924.60/32,886.90 = 20,110.20/x
  3. Step 3: Cross multiply
    21,924.60x = 32,886.90 × 20,110.20
  4. Step 4: Simplify right side
    21,924.60x = 661,362,136.38
  5. Step 5: Solve for x
    x = 661,362,136.38/21,924.60
  6. Step 6: Final answer
    x = 30,165.30

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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.