Home / 12,387,816.40-18,581,724.60-3,291,317.96

Finding the Fourth Proportional to 12,387,816.40, 18,581,724.60 and 3,291,317.96

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Solution

The fourth proportional to 12,387,816.40, 18,581,724.60 and 3,291,317.96 is: 4,936,976.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,387,816.40 : 18,581,724.60 = 3,291,317.96 : x
  2. Step 2: Convert to fraction form
    12,387,816.40/18,581,724.60 = 3,291,317.96/x
  3. Step 3: Cross multiply
    12,387,816.40x = 18,581,724.60 × 3,291,317.96
  4. Step 4: Simplify right side
    12,387,816.40x = 61,158,363,903,753.82
  5. Step 5: Solve for x
    x = 61,158,363,903,753.82/12,387,816.40
  6. Step 6: Final answer
    x = 4,936,976.94

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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.