Home / 20,744.12-28,626.82-11,312.68

Finding the Fourth Proportional to 20,744.12, 28,626.82 and 11,312.68

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Solution

The fourth proportional to 20,744.12, 28,626.82 and 11,312.68 is: 15,611.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,744.12 : 28,626.82 = 11,312.68 : x
  2. Step 2: Convert to fraction form
    20,744.12/28,626.82 = 11,312.68/x
  3. Step 3: Cross multiply
    20,744.12x = 28,626.82 × 11,312.68
  4. Step 4: Simplify right side
    20,744.12x = 323,846,054.08
  5. Step 5: Solve for x
    x = 323,846,054.08/20,744.12
  6. Step 6: Final answer
    x = 15,611.46

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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.