Home / 20,679.25-28,529.63-12,176.17

Finding the Fourth Proportional to 20,679.25, 28,529.63 and 12,176.17

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Solution

The fourth proportional to 20,679.25, 28,529.63 and 12,176.17 is: 16,798.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,679.25 : 28,529.63 = 12,176.17 : x
  2. Step 2: Convert to fraction form
    20,679.25/28,529.63 = 12,176.17/x
  3. Step 3: Cross multiply
    20,679.25x = 28,529.63 × 12,176.17
  4. Step 4: Simplify right side
    20,679.25x = 347,381,624.92
  5. Step 5: Solve for x
    x = 347,381,624.92/20,679.25
  6. Step 6: Final answer
    x = 16,798.56

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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.