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Finding the Fourth Proportional to 20,458.35, 30,706.97 and 10,604.70

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Solution

The fourth proportional to 20,458.35, 30,706.97 and 10,604.70 is: 15,917.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,458.35 : 30,706.97 = 10,604.70 : x
  2. Step 2: Convert to fraction form
    20,458.35/30,706.97 = 10,604.70/x
  3. Step 3: Cross multiply
    20,458.35x = 30,706.97 × 10,604.70
  4. Step 4: Simplify right side
    20,458.35x = 325,638,151.74
  5. Step 5: Solve for x
    x = 325,638,151.74/20,458.35
  6. Step 6: Final answer
    x = 15,917.13

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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.