Home / 20,610,019.80-30,915,029.70-7,146,847.80

Finding the Fourth Proportional to 20,610,019.80, 30,915,029.70 and 7,146,847.80

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Solution

The fourth proportional to 20,610,019.80, 30,915,029.70 and 7,146,847.80 is: 10,720,271.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,610,019.80 : 30,915,029.70 = 7,146,847.80 : x
  2. Step 2: Convert to fraction form
    20,610,019.80/30,915,029.70 = 7,146,847.80/x
  3. Step 3: Cross multiply
    20,610,019.80x = 30,915,029.70 × 7,146,847.80
  4. Step 4: Simplify right side
    20,610,019.80x = 220,945,011,998,379.66
  5. Step 5: Solve for x
    x = 220,945,011,998,379.66/20,610,019.80
  6. Step 6: Final answer
    x = 10,720,271.70

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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.