Home / 20,286.02-27,979.88-13,559.82

Finding the Fourth Proportional to 20,286.02, 27,979.88 and 13,559.82

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Solution

The fourth proportional to 20,286.02, 27,979.88 and 13,559.82 is: 18,702.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,286.02 : 27,979.88 = 13,559.82 : x
  2. Step 2: Convert to fraction form
    20,286.02/27,979.88 = 13,559.82/x
  3. Step 3: Cross multiply
    20,286.02x = 27,979.88 × 13,559.82
  4. Step 4: Simplify right side
    20,286.02x = 379,402,136.42
  5. Step 5: Solve for x
    x = 379,402,136.42/20,286.02
  6. Step 6: Final answer
    x = 18,702.64

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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.