Home / 20,050.30-30,075.46-12,665.98

Finding the Fourth Proportional to 20,050.30, 30,075.46 and 12,665.98

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Solution

The fourth proportional to 20,050.30, 30,075.46 and 12,665.98 is: 18,998.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,050.30 : 30,075.46 = 12,665.98 : x
  2. Step 2: Convert to fraction form
    20,050.30/30,075.46 = 12,665.98/x
  3. Step 3: Cross multiply
    20,050.30x = 30,075.46 × 12,665.98
  4. Step 4: Simplify right side
    20,050.30x = 380,935,174.85
  5. Step 5: Solve for x
    x = 380,935,174.85/20,050.30
  6. Step 6: Final answer
    x = 18,998.98

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Double scale
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Similar ratio
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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.