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Finding the Fourth Proportional to 20,157.75, 30,236.65 and 7,010.14

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Solution

The fourth proportional to 20,157.75, 30,236.65 and 7,010.14 is: 10,515.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,157.75 : 30,236.65 = 7,010.14 : x
  2. Step 2: Convert to fraction form
    20,157.75/30,236.65 = 7,010.14/x
  3. Step 3: Cross multiply
    20,157.75x = 30,236.65 × 7,010.14
  4. Step 4: Simplify right side
    20,157.75x = 211,963,149.63
  5. Step 5: Solve for x
    x = 211,963,149.63/20,157.75
  6. Step 6: Final answer
    x = 10,515.22

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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.