Home / 20,219,820.70-30,329,731.05-12,567,070.30

Finding the Fourth Proportional to 20,219,820.70, 30,329,731.05 and 12,567,070.30

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Solution

The fourth proportional to 20,219,820.70, 30,329,731.05 and 12,567,070.30 is: 18,850,605.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,219,820.70 : 30,329,731.05 = 12,567,070.30 : x
  2. Step 2: Convert to fraction form
    20,219,820.70/30,329,731.05 = 12,567,070.30/x
  3. Step 3: Cross multiply
    20,219,820.70x = 30,329,731.05 × 12,567,070.30
  4. Step 4: Simplify right side
    20,219,820.70x = 381,155,862,285,442.88
  5. Step 5: Solve for x
    x = 381,155,862,285,442.88/20,219,820.70
  6. Step 6: Final answer
    x = 18,850,605.45

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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.