Home / 20,646,511.20-30,993,386.40-12,131,645.40

Finding the Fourth Proportional to 20,646,511.20, 30,993,386.40 and 12,131,645.40

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Solution

The fourth proportional to 20,646,511.20, 30,993,386.40 and 12,131,645.40 is: 18,211,346.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,646,511.20 : 30,993,386.40 = 12,131,645.40 : x
  2. Step 2: Convert to fraction form
    20,646,511.20/30,993,386.40 = 12,131,645.40/x
  3. Step 3: Cross multiply
    20,646,511.20x = 30,993,386.40 × 12,131,645.40
  4. Step 4: Simplify right side
    20,646,511.20x = 376,000,773,549,982.56
  5. Step 5: Solve for x
    x = 376,000,773,549,982.56/20,646,511.20
  6. Step 6: Final answer
    x = 18,211,346.70

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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.