Home / 20,120,409.60-30,165,852.15-7,983,871.80

Finding the Fourth Proportional to 20,120,409.60, 30,165,852.15 and 7,983,871.80

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Solution

The fourth proportional to 20,120,409.60, 30,165,852.15 and 7,983,871.80 is: 11,969,949.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,120,409.60 : 30,165,852.15 = 7,983,871.80 : x
  2. Step 2: Convert to fraction form
    20,120,409.60/30,165,852.15 = 7,983,871.80/x
  3. Step 3: Cross multiply
    20,120,409.60x = 30,165,852.15 × 7,983,871.80
  4. Step 4: Simplify right side
    20,120,409.60x = 240,840,296,303,354.34
  5. Step 5: Solve for x
    x = 240,840,296,303,354.34/20,120,409.60
  6. Step 6: Final answer
    x = 11,969,949.97

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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.