Home / 20,744.40-28,631.04-12,245.84

Finding the Fourth Proportional to 20,744.40, 28,631.04 and 12,245.84

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Solution

The fourth proportional to 20,744.40, 28,631.04 and 12,245.84 is: 16,901.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,744.40 : 28,631.04 = 12,245.84 : x
  2. Step 2: Convert to fraction form
    20,744.40/28,631.04 = 12,245.84/x
  3. Step 3: Cross multiply
    20,744.40x = 28,631.04 × 12,245.84
  4. Step 4: Simplify right side
    20,744.40x = 350,611,134.87
  5. Step 5: Solve for x
    x = 350,611,134.87/20,744.40
  6. Step 6: Final answer
    x = 16,901.48

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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.