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Finding the Fourth Proportional to 13,958.05, 20,920.04 and 6,552.62

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Solution

The fourth proportional to 13,958.05, 20,920.04 and 6,552.62 is: 9,820.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,958.05 : 20,920.04 = 6,552.62 : x
  2. Step 2: Convert to fraction form
    13,958.05/20,920.04 = 6,552.62/x
  3. Step 3: Cross multiply
    13,958.05x = 20,920.04 × 6,552.62
  4. Step 4: Simplify right side
    13,958.05x = 137,081,039.74
  5. Step 5: Solve for x
    x = 137,081,039.74/13,958.05
  6. Step 6: Final answer
    x = 9,820.93

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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.