Home / 20,219,810.10-30,329,715.15-12,567,059.70

Finding the Fourth Proportional to 20,219,810.10, 30,329,715.15 and 12,567,059.70

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Solution

The fourth proportional to 20,219,810.10, 30,329,715.15 and 12,567,059.70 is: 18,850,589.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,219,810.10 : 30,329,715.15 = 12,567,059.70 : x
  2. Step 2: Convert to fraction form
    20,219,810.10/30,329,715.15 = 12,567,059.70/x
  3. Step 3: Cross multiply
    20,219,810.10x = 30,329,715.15 × 12,567,059.70
  4. Step 4: Simplify right side
    20,219,810.10x = 381,155,340,974,044.44
  5. Step 5: Solve for x
    x = 381,155,340,974,044.44/20,219,810.10
  6. Step 6: Final answer
    x = 18,850,589.55

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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.