Home / 28,686.56-39,585.11-16,587.80

Finding the Fourth Proportional to 28,686.56, 39,585.11 and 16,587.80

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Solution

The fourth proportional to 28,686.56, 39,585.11 and 16,587.80 is: 22,889.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,686.56 : 39,585.11 = 16,587.80 : x
  2. Step 2: Convert to fraction form
    28,686.56/39,585.11 = 16,587.80/x
  3. Step 3: Cross multiply
    28,686.56x = 39,585.11 × 16,587.80
  4. Step 4: Simplify right side
    28,686.56x = 656,629,977.90
  5. Step 5: Solve for x
    x = 656,629,977.90/28,686.56
  6. Step 6: Final answer
    x = 22,889.82

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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.