Home / 20,821,327.20-28,694,484.36-15,010,205.76

Finding the Fourth Proportional to 20,821,327.20, 28,694,484.36 and 15,010,205.76

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Solution

The fourth proportional to 20,821,327.20, 28,694,484.36 and 15,010,205.76 is: 20,686,006.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,821,327.20 : 28,694,484.36 = 15,010,205.76 : x
  2. Step 2: Convert to fraction form
    20,821,327.20/28,694,484.36 = 15,010,205.76/x
  3. Step 3: Cross multiply
    20,821,327.20x = 28,694,484.36 × 15,010,205.76
  4. Step 4: Simplify right side
    20,821,327.20x = 430,710,114,420,701.88
  5. Step 5: Solve for x
    x = 430,710,114,420,701.88/20,821,327.20
  6. Step 6: Final answer
    x = 20,686,006.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.