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Finding the Fourth Proportional to 21,747.04, 32,620.56 and 8,605.60

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Solution

The fourth proportional to 21,747.04, 32,620.56 and 8,605.60 is: 12,908.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,747.04 : 32,620.56 = 8,605.60 : x
  2. Step 2: Convert to fraction form
    21,747.04/32,620.56 = 8,605.60/x
  3. Step 3: Cross multiply
    21,747.04x = 32,620.56 × 8,605.60
  4. Step 4: Simplify right side
    21,747.04x = 280,719,491.14
  5. Step 5: Solve for x
    x = 280,719,491.14/21,747.04
  6. Step 6: Final answer
    x = 12,908.40

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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.