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Finding the Fourth Proportional to 18,702.42, 28,026.90 and 13,733.08

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Solution

The fourth proportional to 18,702.42, 28,026.90 and 13,733.08 is: 20,579.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,702.42 : 28,026.90 = 13,733.08 : x
  2. Step 2: Convert to fraction form
    18,702.42/28,026.90 = 13,733.08/x
  3. Step 3: Cross multiply
    18,702.42x = 28,026.90 × 13,733.08
  4. Step 4: Simplify right side
    18,702.42x = 384,895,659.85
  5. Step 5: Solve for x
    x = 384,895,659.85/18,702.42
  6. Step 6: Final answer
    x = 20,579.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.