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Finding the Fourth Proportional to 20,166.58, 30,250.80 and 7,019.98

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Solution

The fourth proportional to 20,166.58, 30,250.80 and 7,019.98 is: 10,530.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,166.58 : 30,250.80 = 7,019.98 : x
  2. Step 2: Convert to fraction form
    20,166.58/30,250.80 = 7,019.98/x
  3. Step 3: Cross multiply
    20,166.58x = 30,250.80 × 7,019.98
  4. Step 4: Simplify right side
    20,166.58x = 212,360,010.98
  5. Step 5: Solve for x
    x = 212,360,010.98/20,166.58
  6. Step 6: Final answer
    x = 10,530.29

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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.