Home / 21,101,520.20-31,651,689.78-6,725,450.66

Finding the Fourth Proportional to 21,101,520.20, 31,651,689.78 and 6,725,450.66

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Solution

The fourth proportional to 21,101,520.20, 31,651,689.78 and 6,725,450.66 is: 10,087,987.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,101,520.20 : 31,651,689.78 = 6,725,450.66 : x
  2. Step 2: Convert to fraction form
    21,101,520.20/31,651,689.78 = 6,725,450.66/x
  3. Step 3: Cross multiply
    21,101,520.20x = 31,651,689.78 × 6,725,450.66
  4. Step 4: Simplify right side
    21,101,520.20x = 212,871,877,762,757.81
  5. Step 5: Solve for x
    x = 212,871,877,762,757.81/21,101,520.20
  6. Step 6: Final answer
    x = 10,087,987.78

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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.