Home / 20,771,106.80-31,162,419.30-8,646,281.60

Finding the Fourth Proportional to 20,771,106.80, 31,162,419.30 and 8,646,281.60

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Solution

The fourth proportional to 20,771,106.80, 31,162,419.30 and 8,646,281.60 is: 12,971,819.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,771,106.80 : 31,162,419.30 = 8,646,281.60 : x
  2. Step 2: Convert to fraction form
    20,771,106.80/31,162,419.30 = 8,646,281.60/x
  3. Step 3: Cross multiply
    20,771,106.80x = 31,162,419.30 × 8,646,281.60
  4. Step 4: Simplify right side
    20,771,106.80x = 269,439,052,605,074.88
  5. Step 5: Solve for x
    x = 269,439,052,605,074.88/20,771,106.80
  6. Step 6: Final answer
    x = 12,971,819.71

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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.