Home / 20,392.63-28,144.68-14,745.61

Finding the Fourth Proportional to 20,392.63, 28,144.68 and 14,745.61

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Solution

The fourth proportional to 20,392.63, 28,144.68 and 14,745.61 is: 20,351.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,392.63 : 28,144.68 = 14,745.61 : x
  2. Step 2: Convert to fraction form
    20,392.63/28,144.68 = 14,745.61/x
  3. Step 3: Cross multiply
    20,392.63x = 28,144.68 × 14,745.61
  4. Step 4: Simplify right side
    20,392.63x = 415,010,474.85
  5. Step 5: Solve for x
    x = 415,010,474.85/20,392.63
  6. Step 6: Final answer
    x = 20,351.00

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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.