Home / 20,831,998.80-31,247,998.20-5,479,258.80

Finding the Fourth Proportional to 20,831,998.80, 31,247,998.20 and 5,479,258.80

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Solution

The fourth proportional to 20,831,998.80, 31,247,998.20 and 5,479,258.80 is: 8,218,888.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,831,998.80 : 31,247,998.20 = 5,479,258.80 : x
  2. Step 2: Convert to fraction form
    20,831,998.80/31,247,998.20 = 5,479,258.80/x
  3. Step 3: Cross multiply
    20,831,998.80x = 31,247,998.20 × 5,479,258.80
  4. Step 4: Simplify right side
    20,831,998.80x = 171,215,869,119,734.16
  5. Step 5: Solve for x
    x = 171,215,869,119,734.16/20,831,998.80
  6. Step 6: Final answer
    x = 8,218,888.20

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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.