Home / 20,219,826.20-30,329,739.30-12,567,075.80

Finding the Fourth Proportional to 20,219,826.20, 30,329,739.30 and 12,567,075.80

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Solution

The fourth proportional to 20,219,826.20, 30,329,739.30 and 12,567,075.80 is: 18,850,613.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,219,826.20 : 30,329,739.30 = 12,567,075.80 : x
  2. Step 2: Convert to fraction form
    20,219,826.20/30,329,739.30 = 12,567,075.80/x
  3. Step 3: Cross multiply
    20,219,826.20x = 30,329,739.30 × 12,567,075.80
  4. Step 4: Simplify right side
    20,219,826.20x = 381,156,132,777,339
  5. Step 5: Solve for x
    x = 381,156,132,777,339/20,219,826.20
  6. Step 6: Final answer
    x = 18,850,613.70

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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.