Home / 19,821.20-29,727-6,670.16

Finding the Fourth Proportional to 19,821.20, 29,727 and 6,670.16

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Solution

The fourth proportional to 19,821.20, 29,727 and 6,670.16 is: 10,003.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,821.20 : 29,727 = 6,670.16 : x
  2. Step 2: Convert to fraction form
    19,821.20/29,727 = 6,670.16/x
  3. Step 3: Cross multiply
    19,821.20x = 29,727 × 6,670.16
  4. Step 4: Simplify right side
    19,821.20x = 198,283,846.32
  5. Step 5: Solve for x
    x = 198,283,846.32/19,821.20
  6. Step 6: Final answer
    x = 10,003.62

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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.