Home / 21,265,233.30-31,921,469.55-13,187,330.10

Finding the Fourth Proportional to 21,265,233.30, 31,921,469.55 and 13,187,330.10

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Solution

The fourth proportional to 21,265,233.30, 31,921,469.55 and 13,187,330.10 is: 19,795,642.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,265,233.30 : 31,921,469.55 = 13,187,330.10 : x
  2. Step 2: Convert to fraction form
    21,265,233.30/31,921,469.55 = 13,187,330.10/x
  3. Step 3: Cross multiply
    21,265,233.30x = 31,921,469.55 × 13,187,330.10
  4. Step 4: Simplify right side
    21,265,233.30x = 420,958,956,232,948.44
  5. Step 5: Solve for x
    x = 420,958,956,232,948.44/21,265,233.30
  6. Step 6: Final answer
    x = 19,795,642.51

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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.