Home / 21,019,391.10-31,526,134.20-6,643,912.05

Finding the Fourth Proportional to 21,019,391.10, 31,526,134.20 and 6,643,912.05

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Solution

The fourth proportional to 21,019,391.10, 31,526,134.20 and 6,643,912.05 is: 9,964,934.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,019,391.10 : 31,526,134.20 = 6,643,912.05 : x
  2. Step 2: Convert to fraction form
    21,019,391.10/31,526,134.20 = 6,643,912.05/x
  3. Step 3: Cross multiply
    21,019,391.10x = 31,526,134.20 × 6,643,912.05
  4. Step 4: Simplify right side
    21,019,391.10x = 209,456,862,901,297.09
  5. Step 5: Solve for x
    x = 209,456,862,901,297.09/21,019,391.10
  6. Step 6: Final answer
    x = 9,964,934.85

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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.