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Finding the Fourth Proportional to 21,905.44, 32,838.68 and 8,051.20

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Solution

The fourth proportional to 21,905.44, 32,838.68 and 8,051.20 is: 12,069.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,905.44 : 32,838.68 = 8,051.20 : x
  2. Step 2: Convert to fraction form
    21,905.44/32,838.68 = 8,051.20/x
  3. Step 3: Cross multiply
    21,905.44x = 32,838.68 × 8,051.20
  4. Step 4: Simplify right side
    21,905.44x = 264,390,780.42
  5. Step 5: Solve for x
    x = 264,390,780.42/21,905.44
  6. Step 6: Final answer
    x = 12,069.64

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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.