Home / 21,069,693.25-31,607,069.94-7,420,016.61

Finding the Fourth Proportional to 21,069,693.25, 31,607,069.94 and 7,420,016.61

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Solution

The fourth proportional to 21,069,693.25, 31,607,069.94 and 7,420,016.61 is: 11,130,915.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,069,693.25 : 31,607,069.94 = 7,420,016.61 : x
  2. Step 2: Convert to fraction form
    21,069,693.25/31,607,069.94 = 7,420,016.61/x
  3. Step 3: Cross multiply
    21,069,693.25x = 31,607,069.94 × 7,420,016.61
  4. Step 4: Simplify right side
    21,069,693.25x = 234,524,983,948,231.72
  5. Step 5: Solve for x
    x = 234,524,983,948,231.72/21,069,693.25
  6. Step 6: Final answer
    x = 11,130,915.92

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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.