Home / 21,082,906.20-31,624,359.30-12,460,877.40

Finding the Fourth Proportional to 21,082,906.20, 31,624,359.30 and 12,460,877.40

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Solution

The fourth proportional to 21,082,906.20, 31,624,359.30 and 12,460,877.40 is: 18,691,316.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,082,906.20 : 31,624,359.30 = 12,460,877.40 : x
  2. Step 2: Convert to fraction form
    21,082,906.20/31,624,359.30 = 12,460,877.40/x
  3. Step 3: Cross multiply
    21,082,906.20x = 31,624,359.30 × 12,460,877.40
  4. Step 4: Simplify right side
    21,082,906.20x = 394,067,264,090,849.81
  5. Step 5: Solve for x
    x = 394,067,264,090,849.81/21,082,906.20
  6. Step 6: Final answer
    x = 18,691,316.10

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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.