Home / 21,438,931.88-29,585,912.82-11,649,376.28

Finding the Fourth Proportional to 21,438,931.88, 29,585,912.82 and 11,649,376.28

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Solution

The fourth proportional to 21,438,931.88, 29,585,912.82 and 11,649,376.28 is: 16,076,240.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,438,931.88 : 29,585,912.82 = 11,649,376.28 : x
  2. Step 2: Convert to fraction form
    21,438,931.88/29,585,912.82 = 11,649,376.28/x
  3. Step 3: Cross multiply
    21,438,931.88x = 29,585,912.82 × 11,649,376.28
  4. Step 4: Simplify right side
    21,438,931.88x = 344,657,431,027,455.88
  5. Step 5: Solve for x
    x = 344,657,431,027,455.88/21,438,931.88
  6. Step 6: Final answer
    x = 16,076,240.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.