Home / 20,831,868.40-31,236,386.18-6,450,943.72

Finding the Fourth Proportional to 20,831,868.40, 31,236,386.18 and 6,450,943.72

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Solution

The fourth proportional to 20,831,868.40, 31,236,386.18 and 6,450,943.72 is: 9,672,880.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,831,868.40 : 31,236,386.18 = 6,450,943.72 : x
  2. Step 2: Convert to fraction form
    20,831,868.40/31,236,386.18 = 6,450,943.72/x
  3. Step 3: Cross multiply
    20,831,868.40x = 31,236,386.18 × 6,450,943.72
  4. Step 4: Simplify right side
    20,831,868.40x = 201,504,169,263,365.78
  5. Step 5: Solve for x
    x = 201,504,169,263,365.78/20,831,868.40
  6. Step 6: Final answer
    x = 9,672,880.29

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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.