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Finding the Fourth Proportional to 9,809.80, 14,693.10 and 6,872.20

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Solution

The fourth proportional to 9,809.80, 14,693.10 and 6,872.20 is: 10,293.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,809.80 : 14,693.10 = 6,872.20 : x
  2. Step 2: Convert to fraction form
    9,809.80/14,693.10 = 6,872.20/x
  3. Step 3: Cross multiply
    9,809.80x = 14,693.10 × 6,872.20
  4. Step 4: Simplify right side
    9,809.80x = 100,973,921.82
  5. Step 5: Solve for x
    x = 100,973,921.82/9,809.80
  6. Step 6: Final answer
    x = 10,293.17

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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.