Home / 20,840.44-28,729.86-14,861.70

Finding the Fourth Proportional to 20,840.44, 28,729.86 and 14,861.70

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Solution

The fourth proportional to 20,840.44, 28,729.86 and 14,861.70 is: 20,487.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,840.44 : 28,729.86 = 14,861.70 : x
  2. Step 2: Convert to fraction form
    20,840.44/28,729.86 = 14,861.70/x
  3. Step 3: Cross multiply
    20,840.44x = 28,729.86 × 14,861.70
  4. Step 4: Simplify right side
    20,840.44x = 426,974,560.36
  5. Step 5: Solve for x
    x = 426,974,560.36/20,840.44
  6. Step 6: Final answer
    x = 20,487.79

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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.