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Finding the Fourth Proportional to 20,706.60, 31,035.60 and 7,550.58

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Solution

The fourth proportional to 20,706.60, 31,035.60 and 7,550.58 is: 11,317.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,706.60 : 31,035.60 = 7,550.58 : x
  2. Step 2: Convert to fraction form
    20,706.60/31,035.60 = 7,550.58/x
  3. Step 3: Cross multiply
    20,706.60x = 31,035.60 × 7,550.58
  4. Step 4: Simplify right side
    20,706.60x = 234,336,780.65
  5. Step 5: Solve for x
    x = 234,336,780.65/20,706.60
  6. Step 6: Final answer
    x = 11,317.01

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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.