Home / 28,366.56-39,144.33-15,790.50

Finding the Fourth Proportional to 28,366.56, 39,144.33 and 15,790.50

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Solution

The fourth proportional to 28,366.56, 39,144.33 and 15,790.50 is: 21,790.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,366.56 : 39,144.33 = 15,790.50 : x
  2. Step 2: Convert to fraction form
    28,366.56/39,144.33 = 15,790.50/x
  3. Step 3: Cross multiply
    28,366.56x = 39,144.33 × 15,790.50
  4. Step 4: Simplify right side
    28,366.56x = 618,108,542.87
  5. Step 5: Solve for x
    x = 618,108,542.87/28,366.56
  6. Step 6: Final answer
    x = 21,790.04

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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.