Home / 20,391.63-28,143.30-14,744.61

Finding the Fourth Proportional to 20,391.63, 28,143.30 and 14,744.61

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Solution

The fourth proportional to 20,391.63, 28,143.30 and 14,744.61 is: 20,349.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,391.63 : 28,143.30 = 14,744.61 : x
  2. Step 2: Convert to fraction form
    20,391.63/28,143.30 = 14,744.61/x
  3. Step 3: Cross multiply
    20,391.63x = 28,143.30 × 14,744.61
  4. Step 4: Simplify right side
    20,391.63x = 414,961,982.61
  5. Step 5: Solve for x
    x = 414,961,982.61/20,391.63
  6. Step 6: Final answer
    x = 20,349.62

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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.