Home / 20,925,321.40-31,387,982.10-10,831,036.60

Finding the Fourth Proportional to 20,925,321.40, 31,387,982.10 and 10,831,036.60

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Solution

The fourth proportional to 20,925,321.40, 31,387,982.10 and 10,831,036.60 is: 16,246,554.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,925,321.40 : 31,387,982.10 = 10,831,036.60 : x
  2. Step 2: Convert to fraction form
    20,925,321.40/31,387,982.10 = 10,831,036.60/x
  3. Step 3: Cross multiply
    20,925,321.40x = 31,387,982.10 × 10,831,036.60
  4. Step 4: Simplify right side
    20,925,321.40x = 339,964,382,925,244.88
  5. Step 5: Solve for x
    x = 339,964,382,925,244.88/20,925,321.40
  6. Step 6: Final answer
    x = 16,246,554.90

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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.