Home / 21,530,921.60-32,259,822.40-12,993,318.40

Finding the Fourth Proportional to 21,530,921.60, 32,259,822.40 and 12,993,318.40

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Solution

The fourth proportional to 21,530,921.60, 32,259,822.40 and 12,993,318.40 is: 19,467,914.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,530,921.60 : 32,259,822.40 = 12,993,318.40 : x
  2. Step 2: Convert to fraction form
    21,530,921.60/32,259,822.40 = 12,993,318.40/x
  3. Step 3: Cross multiply
    21,530,921.60x = 32,259,822.40 × 12,993,318.40
  4. Step 4: Simplify right side
    21,530,921.60x = 419,162,143,970,652.12
  5. Step 5: Solve for x
    x = 419,162,143,970,652.12/21,530,921.60
  6. Step 6: Final answer
    x = 19,467,914.65

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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.