Home / 20,901.72-28,721.67-16,702.68

Finding the Fourth Proportional to 20,901.72, 28,721.67 and 16,702.68

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Solution

The fourth proportional to 20,901.72, 28,721.67 and 16,702.68 is: 22,951.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,901.72 : 28,721.67 = 16,702.68 : x
  2. Step 2: Convert to fraction form
    20,901.72/28,721.67 = 16,702.68/x
  3. Step 3: Cross multiply
    20,901.72x = 28,721.67 × 16,702.68
  4. Step 4: Simplify right side
    20,901.72x = 479,728,863.08
  5. Step 5: Solve for x
    x = 479,728,863.08/20,901.72
  6. Step 6: Final answer
    x = 22,951.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.