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Finding the Fourth Proportional to 19,880.29, 29,801.90 and 6,723.51

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Solution

The fourth proportional to 19,880.29, 29,801.90 and 6,723.51 is: 10,078.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,880.29 : 29,801.90 = 6,723.51 : x
  2. Step 2: Convert to fraction form
    19,880.29/29,801.90 = 6,723.51/x
  3. Step 3: Cross multiply
    19,880.29x = 29,801.90 × 6,723.51
  4. Step 4: Simplify right side
    19,880.29x = 200,373,190.04
  5. Step 5: Solve for x
    x = 200,373,190.04/19,880.29
  6. Step 6: Final answer
    x = 10,078.99

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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.