Home / 18,863,539.20-28,239,321.60-12,480,998.40

Finding the Fourth Proportional to 18,863,539.20, 28,239,321.60 and 12,480,998.40

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Solution

The fourth proportional to 18,863,539.20, 28,239,321.60 and 12,480,998.40 is: 18,684,453.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,863,539.20 : 28,239,321.60 = 12,480,998.40 : x
  2. Step 2: Convert to fraction form
    18,863,539.20/28,239,321.60 = 12,480,998.40/x
  3. Step 3: Cross multiply
    18,863,539.20x = 28,239,321.60 × 12,480,998.40
  4. Step 4: Simplify right side
    18,863,539.20x = 352,454,927,706,685.50
  5. Step 5: Solve for x
    x = 352,454,927,706,685.50/18,863,539.20
  6. Step 6: Final answer
    x = 18,684,453.85

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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.