Home / 20,219,820.60-30,329,730.90-12,567,070.20

Finding the Fourth Proportional to 20,219,820.60, 30,329,730.90 and 12,567,070.20

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Solution

The fourth proportional to 20,219,820.60, 30,329,730.90 and 12,567,070.20 is: 18,850,605.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,219,820.60 : 30,329,730.90 = 12,567,070.20 : x
  2. Step 2: Convert to fraction form
    20,219,820.60/30,329,730.90 = 12,567,070.20/x
  3. Step 3: Cross multiply
    20,219,820.60x = 30,329,730.90 × 12,567,070.20
  4. Step 4: Simplify right side
    20,219,820.60x = 381,155,857,367,409.12
  5. Step 5: Solve for x
    x = 381,155,857,367,409.12/20,219,820.60
  6. Step 6: Final answer
    x = 18,850,605.30

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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.