Home / 12,476,905.20-18,722,356.20-5,287,215.60

Finding the Fourth Proportional to 12,476,905.20, 18,722,356.20 and 5,287,215.60

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Solution

The fourth proportional to 12,476,905.20, 18,722,356.20 and 5,287,215.60 is: 7,933,789.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,476,905.20 : 18,722,356.20 = 5,287,215.60 : x
  2. Step 2: Convert to fraction form
    12,476,905.20/18,722,356.20 = 5,287,215.60/x
  3. Step 3: Cross multiply
    12,476,905.20x = 18,722,356.20 × 5,287,215.60
  4. Step 4: Simplify right side
    12,476,905.20x = 98,989,133,769,396.70
  5. Step 5: Solve for x
    x = 98,989,133,769,396.70/12,476,905.20
  6. Step 6: Final answer
    x = 7,933,789.04

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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.