Home / 20,976,840.96-31,467,106.74-6,407,049.72

Finding the Fourth Proportional to 20,976,840.96, 31,467,106.74 and 6,407,049.72

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Solution

The fourth proportional to 20,976,840.96, 31,467,106.74 and 6,407,049.72 is: 9,611,138.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,976,840.96 : 31,467,106.74 = 6,407,049.72 : x
  2. Step 2: Convert to fraction form
    20,976,840.96/31,467,106.74 = 6,407,049.72/x
  3. Step 3: Cross multiply
    20,976,840.96x = 31,467,106.74 × 6,407,049.72
  4. Step 4: Simplify right side
    20,976,840.96x = 201,611,317,427,727.09
  5. Step 5: Solve for x
    x = 201,611,317,427,727.09/20,976,840.96
  6. Step 6: Final answer
    x = 9,611,138.20

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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.