Home / 20,120,869.20-30,181,303.80-7,337,125.20

Finding the Fourth Proportional to 20,120,869.20, 30,181,303.80 and 7,337,125.20

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Solution

The fourth proportional to 20,120,869.20, 30,181,303.80 and 7,337,125.20 is: 11,005,687.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,120,869.20 : 30,181,303.80 = 7,337,125.20 : x
  2. Step 2: Convert to fraction form
    20,120,869.20/30,181,303.80 = 7,337,125.20/x
  3. Step 3: Cross multiply
    20,120,869.20x = 30,181,303.80 × 7,337,125.20
  4. Step 4: Simplify right side
    20,120,869.20x = 221,444,004,679,835.78
  5. Step 5: Solve for x
    x = 221,444,004,679,835.78/20,120,869.20
  6. Step 6: Final answer
    x = 11,005,687.80

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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.