Home / 20,420,066.39-30,611,560.20-10,188,055.67

Finding the Fourth Proportional to 20,420,066.39, 30,611,560.20 and 10,188,055.67

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Solution

The fourth proportional to 20,420,066.39, 30,611,560.20 and 10,188,055.67 is: 15,272,833.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,420,066.39 : 30,611,560.20 = 10,188,055.67 : x
  2. Step 2: Convert to fraction form
    20,420,066.39/30,611,560.20 = 10,188,055.67/x
  3. Step 3: Cross multiply
    20,420,066.39x = 30,611,560.20 × 10,188,055.67
  4. Step 4: Simplify right side
    20,420,066.39x = 311,872,279,271,893.31
  5. Step 5: Solve for x
    x = 311,872,279,271,893.31/20,420,066.39
  6. Step 6: Final answer
    x = 15,272,833.76

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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.