Home / 20,118,511.20-30,177,766.80-7,339,432.80

Finding the Fourth Proportional to 20,118,511.20, 30,177,766.80 and 7,339,432.80

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Solution

The fourth proportional to 20,118,511.20, 30,177,766.80 and 7,339,432.80 is: 11,009,149.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,118,511.20 : 30,177,766.80 = 7,339,432.80 : x
  2. Step 2: Convert to fraction form
    20,118,511.20/30,177,766.80 = 7,339,432.80/x
  3. Step 3: Cross multiply
    20,118,511.20x = 30,177,766.80 × 7,339,432.80
  4. Step 4: Simplify right side
    20,118,511.20x = 221,487,691,482,671.03
  5. Step 5: Solve for x
    x = 221,487,691,482,671.03/20,118,511.20
  6. Step 6: Final answer
    x = 11,009,149.20

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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.