Home / 21,279,228.21-31,913,027.33-7,629,840.45

Finding the Fourth Proportional to 21,279,228.21, 31,913,027.33 and 7,629,840.45

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Solution

The fourth proportional to 21,279,228.21, 31,913,027.33 and 7,629,840.45 is: 11,442,675.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,279,228.21 : 31,913,027.33 = 7,629,840.45 : x
  2. Step 2: Convert to fraction form
    21,279,228.21/31,913,027.33 = 7,629,840.45/x
  3. Step 3: Cross multiply
    21,279,228.21x = 31,913,027.33 × 7,629,840.45
  4. Step 4: Simplify right side
    21,279,228.21x = 243,491,306,766,240.28
  5. Step 5: Solve for x
    x = 243,491,306,766,240.28/21,279,228.21
  6. Step 6: Final answer
    x = 11,442,675.66

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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.