Home / 20,930,821.20-31,396,231.80-8,986,885.20

Finding the Fourth Proportional to 20,930,821.20, 31,396,231.80 and 8,986,885.20

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Solution

The fourth proportional to 20,930,821.20, 31,396,231.80 and 8,986,885.20 is: 13,480,327.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,930,821.20 : 31,396,231.80 = 8,986,885.20 : x
  2. Step 2: Convert to fraction form
    20,930,821.20/31,396,231.80 = 8,986,885.20/x
  3. Step 3: Cross multiply
    20,930,821.20x = 31,396,231.80 × 8,986,885.20
  4. Step 4: Simplify right side
    20,930,821.20x = 282,154,330,899,189.31
  5. Step 5: Solve for x
    x = 282,154,330,899,189.31/20,930,821.20
  6. Step 6: Final answer
    x = 13,480,327.80

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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.