Home / 28,718.55-39,633.13-16,788.87

Finding the Fourth Proportional to 28,718.55, 39,633.13 and 16,788.87

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Solution

The fourth proportional to 28,718.55, 39,633.13 and 16,788.87 is: 23,169.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,718.55 : 39,633.13 = 16,788.87 : x
  2. Step 2: Convert to fraction form
    28,718.55/39,633.13 = 16,788.87/x
  3. Step 3: Cross multiply
    28,718.55x = 39,633.13 × 16,788.87
  4. Step 4: Simplify right side
    28,718.55x = 665,395,269.10
  5. Step 5: Solve for x
    x = 665,395,269.10/28,718.55
  6. Step 6: Final answer
    x = 23,169.53

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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.