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Finding the Fourth Proportional to 15,843.37, 21,892.77 and 15,074.77

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Solution

The fourth proportional to 15,843.37, 21,892.77 and 15,074.77 is: 20,830.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,843.37 : 21,892.77 = 15,074.77 : x
  2. Step 2: Convert to fraction form
    15,843.37/21,892.77 = 15,074.77/x
  3. Step 3: Cross multiply
    15,843.37x = 21,892.77 × 15,074.77
  4. Step 4: Simplify right side
    15,843.37x = 330,028,472.41
  5. Step 5: Solve for x
    x = 330,028,472.41/15,843.37
  6. Step 6: Final answer
    x = 20,830.70

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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.