Home / 28,682,641.80-39,581,826.54-15,629,860.35

Finding the Fourth Proportional to 28,682,641.80, 39,581,826.54 and 15,629,860.35

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Solution

The fourth proportional to 28,682,641.80, 39,581,826.54 and 15,629,860.35 is: 21,569,087.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,682,641.80 : 39,581,826.54 = 15,629,860.35 : x
  2. Step 2: Convert to fraction form
    28,682,641.80/39,581,826.54 = 15,629,860.35/x
  3. Step 3: Cross multiply
    28,682,641.80x = 39,581,826.54 × 15,629,860.35
  4. Step 4: Simplify right side
    28,682,641.80x = 618,658,421,218,123.62
  5. Step 5: Solve for x
    x = 618,658,421,218,123.62/28,682,641.80
  6. Step 6: Final answer
    x = 21,569,087.87

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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.