Home / 20,831,863.40-31,236,378.68-6,450,938.72

Finding the Fourth Proportional to 20,831,863.40, 31,236,378.68 and 6,450,938.72

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Solution

The fourth proportional to 20,831,863.40, 31,236,378.68 and 6,450,938.72 is: 9,672,872.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,831,863.40 : 31,236,378.68 = 6,450,938.72 : x
  2. Step 2: Convert to fraction form
    20,831,863.40/31,236,378.68 = 6,450,938.72/x
  3. Step 3: Cross multiply
    20,831,863.40x = 31,236,378.68 × 6,450,938.72
  4. Step 4: Simplify right side
    20,831,863.40x = 201,503,964,699,394.47
  5. Step 5: Solve for x
    x = 201,503,964,699,394.47/20,831,863.40
  6. Step 6: Final answer
    x = 9,672,872.79

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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.