Home / 21,121,390.70-31,682,086.05-16,869,862.70

Finding the Fourth Proportional to 21,121,390.70, 31,682,086.05 and 16,869,862.70

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Solution

The fourth proportional to 21,121,390.70, 31,682,086.05 and 16,869,862.70 is: 25,304,794.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,121,390.70 : 31,682,086.05 = 16,869,862.70 : x
  2. Step 2: Convert to fraction form
    21,121,390.70/31,682,086.05 = 16,869,862.70/x
  3. Step 3: Cross multiply
    21,121,390.70x = 31,682,086.05 × 16,869,862.70
  4. Step 4: Simplify right side
    21,121,390.70x = 534,472,441,713,085.31
  5. Step 5: Solve for x
    x = 534,472,441,713,085.31/21,121,390.70
  6. Step 6: Final answer
    x = 25,304,794.05

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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.