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Finding the Fourth Proportional to 20,210.75, 30,329.99 and 7,063.13

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Solution

The fourth proportional to 20,210.75, 30,329.99 and 7,063.13 is: 10,599.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,210.75 : 30,329.99 = 7,063.13 : x
  2. Step 2: Convert to fraction form
    20,210.75/30,329.99 = 7,063.13/x
  3. Step 3: Cross multiply
    20,210.75x = 30,329.99 × 7,063.13
  4. Step 4: Simplify right side
    20,210.75x = 214,224,475.30
  5. Step 5: Solve for x
    x = 214,224,475.30/20,210.75
  6. Step 6: Final answer
    x = 10,599.53

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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.