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Finding the Fourth Proportional to 21,605.49, 32,404.13 and 6,810.44

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Solution

The fourth proportional to 21,605.49, 32,404.13 and 6,810.44 is: 10,214.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,605.49 : 32,404.13 = 6,810.44 : x
  2. Step 2: Convert to fraction form
    21,605.49/32,404.13 = 6,810.44/x
  3. Step 3: Cross multiply
    21,605.49x = 32,404.13 × 6,810.44
  4. Step 4: Simplify right side
    21,605.49x = 220,686,342.03
  5. Step 5: Solve for x
    x = 220,686,342.03/21,605.49
  6. Step 6: Final answer
    x = 10,214.36

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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.