Home / 20,219,820.20-30,329,730.30-12,567,069.80

Finding the Fourth Proportional to 20,219,820.20, 30,329,730.30 and 12,567,069.80

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Solution

The fourth proportional to 20,219,820.20, 30,329,730.30 and 12,567,069.80 is: 18,850,604.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,219,820.20 : 30,329,730.30 = 12,567,069.80 : x
  2. Step 2: Convert to fraction form
    20,219,820.20/30,329,730.30 = 12,567,069.80/x
  3. Step 3: Cross multiply
    20,219,820.20x = 30,329,730.30 × 12,567,069.80
  4. Step 4: Simplify right side
    20,219,820.20x = 381,155,837,695,275
  5. Step 5: Solve for x
    x = 381,155,837,695,275/20,219,820.20
  6. Step 6: Final answer
    x = 18,850,604.70

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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.