Home / 12,689,432.28-17,511,438.78-6,888,217.96

Finding the Fourth Proportional to 12,689,432.28, 17,511,438.78 and 6,888,217.96

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Solution

The fourth proportional to 12,689,432.28, 17,511,438.78 and 6,888,217.96 is: 9,505,752.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,689,432.28 : 17,511,438.78 = 6,888,217.96 : x
  2. Step 2: Convert to fraction form
    12,689,432.28/17,511,438.78 = 6,888,217.96/x
  3. Step 3: Cross multiply
    12,689,432.28x = 17,511,438.78 × 6,888,217.96
  4. Step 4: Simplify right side
    12,689,432.28x = 120,622,607,109,836.50
  5. Step 5: Solve for x
    x = 120,622,607,109,836.50/12,689,432.28
  6. Step 6: Final answer
    x = 9,505,752.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.