Home / 28,344.52-39,116.82-16,405.72

Finding the Fourth Proportional to 28,344.52, 39,116.82 and 16,405.72

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Solution

The fourth proportional to 28,344.52, 39,116.82 and 16,405.72 is: 22,640.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,344.52 : 39,116.82 = 16,405.72 : x
  2. Step 2: Convert to fraction form
    28,344.52/39,116.82 = 16,405.72/x
  3. Step 3: Cross multiply
    28,344.52x = 39,116.82 × 16,405.72
  4. Step 4: Simplify right side
    28,344.52x = 641,739,596.21
  5. Step 5: Solve for x
    x = 641,739,596.21/28,344.52
  6. Step 6: Final answer
    x = 22,640.69

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1.5x scale

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.