Home / 20,219,820.10-30,329,730.15-12,567,069.70

Finding the Fourth Proportional to 20,219,820.10, 30,329,730.15 and 12,567,069.70

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Solution

The fourth proportional to 20,219,820.10, 30,329,730.15 and 12,567,069.70 is: 18,850,604.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,219,820.10 : 30,329,730.15 = 12,567,069.70 : x
  2. Step 2: Convert to fraction form
    20,219,820.10/30,329,730.15 = 12,567,069.70/x
  3. Step 3: Cross multiply
    20,219,820.10x = 30,329,730.15 × 12,567,069.70
  4. Step 4: Simplify right side
    20,219,820.10x = 381,155,832,777,241.44
  5. Step 5: Solve for x
    x = 381,155,832,777,241.44/20,219,820.10
  6. Step 6: Final answer
    x = 18,850,604.55

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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.