Home / 20,702.49-28,568.45-11,748.77

Finding the Fourth Proportional to 20,702.49, 28,568.45 and 11,748.77

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Solution

The fourth proportional to 20,702.49, 28,568.45 and 11,748.77 is: 16,212.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,702.49 : 28,568.45 = 11,748.77 : x
  2. Step 2: Convert to fraction form
    20,702.49/28,568.45 = 11,748.77/x
  3. Step 3: Cross multiply
    20,702.49x = 28,568.45 × 11,748.77
  4. Step 4: Simplify right side
    20,702.49x = 335,644,156.23
  5. Step 5: Solve for x
    x = 335,644,156.23/20,702.49
  6. Step 6: Final answer
    x = 16,212.75

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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.