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Finding the Fourth Proportional to 20,151.88, 27,801.84 and 14,859.28

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Solution

The fourth proportional to 20,151.88, 27,801.84 and 14,859.28 is: 20,500.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,151.88 : 27,801.84 = 14,859.28 : x
  2. Step 2: Convert to fraction form
    20,151.88/27,801.84 = 14,859.28/x
  3. Step 3: Cross multiply
    20,151.88x = 27,801.84 × 14,859.28
  4. Step 4: Simplify right side
    20,151.88x = 413,115,325.08
  5. Step 5: Solve for x
    x = 413,115,325.08/20,151.88
  6. Step 6: Final answer
    x = 20,500.09

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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.