Home / 20,130,742.20-30,172,493.70-8,616,187.20

Finding the Fourth Proportional to 20,130,742.20, 30,172,493.70 and 8,616,187.20

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Solution

The fourth proportional to 20,130,742.20, 30,172,493.70 and 8,616,187.20 is: 12,914,171.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,130,742.20 : 30,172,493.70 = 8,616,187.20 : x
  2. Step 2: Convert to fraction form
    20,130,742.20/30,172,493.70 = 8,616,187.20/x
  3. Step 3: Cross multiply
    20,130,742.20x = 30,172,493.70 × 8,616,187.20
  4. Step 4: Simplify right side
    20,130,742.20x = 259,971,854,010,020.62
  5. Step 5: Solve for x
    x = 259,971,854,010,020.62/20,130,742.20
  6. Step 6: Final answer
    x = 12,914,171.34

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1.5x scale

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.