Home / 20,219,815.60-30,329,723.40-12,567,065.20

Finding the Fourth Proportional to 20,219,815.60, 30,329,723.40 and 12,567,065.20

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Solution

The fourth proportional to 20,219,815.60, 30,329,723.40 and 12,567,065.20 is: 18,850,597.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,219,815.60 : 30,329,723.40 = 12,567,065.20 : x
  2. Step 2: Convert to fraction form
    20,219,815.60/30,329,723.40 = 12,567,065.20/x
  3. Step 3: Cross multiply
    20,219,815.60x = 30,329,723.40 × 12,567,065.20
  4. Step 4: Simplify right side
    20,219,815.60x = 381,155,611,465,765.62
  5. Step 5: Solve for x
    x = 381,155,611,465,765.62/20,219,815.60
  6. Step 6: Final answer
    x = 18,850,597.80

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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.