Home / 20,702.04-28,568.88-11,270.58

Finding the Fourth Proportional to 20,702.04, 28,568.88 and 11,270.58

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Solution

The fourth proportional to 20,702.04, 28,568.88 and 11,270.58 is: 15,553.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,702.04 : 28,568.88 = 11,270.58 : x
  2. Step 2: Convert to fraction form
    20,702.04/28,568.88 = 11,270.58/x
  3. Step 3: Cross multiply
    20,702.04x = 28,568.88 × 11,270.58
  4. Step 4: Simplify right side
    20,702.04x = 321,987,847.55
  5. Step 5: Solve for x
    x = 321,987,847.55/20,702.04
  6. Step 6: Final answer
    x = 15,553.44

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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.