Home / 12,339,385.20-18,509,077.80-7,288,095.60

Finding the Fourth Proportional to 12,339,385.20, 18,509,077.80 and 7,288,095.60

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Solution

The fourth proportional to 12,339,385.20, 18,509,077.80 and 7,288,095.60 is: 10,932,143.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,339,385.20 : 18,509,077.80 = 7,288,095.60 : x
  2. Step 2: Convert to fraction form
    12,339,385.20/18,509,077.80 = 7,288,095.60/x
  3. Step 3: Cross multiply
    12,339,385.20x = 18,509,077.80 × 7,288,095.60
  4. Step 4: Simplify right side
    12,339,385.20x = 134,895,928,474,237.67
  5. Step 5: Solve for x
    x = 134,895,928,474,237.67/12,339,385.20
  6. Step 6: Final answer
    x = 10,932,143.40

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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.