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Finding the Fourth Proportional to 20,998.17, 31,503.94 and 6,207.17

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Solution

The fourth proportional to 20,998.17, 31,503.94 and 6,207.17 is: 9,312.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,998.17 : 31,503.94 = 6,207.17 : x
  2. Step 2: Convert to fraction form
    20,998.17/31,503.94 = 6,207.17/x
  3. Step 3: Cross multiply
    20,998.17x = 31,503.94 × 6,207.17
  4. Step 4: Simplify right side
    20,998.17x = 195,550,138.21
  5. Step 5: Solve for x
    x = 195,550,138.21/20,998.17
  6. Step 6: Final answer
    x = 9,312.72

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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.