Home / 20,764.80-28,655.01-11,333.39

Finding the Fourth Proportional to 20,764.80, 28,655.01 and 11,333.39

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Solution

The fourth proportional to 20,764.80, 28,655.01 and 11,333.39 is: 15,639.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,764.80 : 28,655.01 = 11,333.39 : x
  2. Step 2: Convert to fraction form
    20,764.80/28,655.01 = 11,333.39/x
  3. Step 3: Cross multiply
    20,764.80x = 28,655.01 × 11,333.39
  4. Step 4: Simplify right side
    20,764.80x = 324,758,260.51
  5. Step 5: Solve for x
    x = 324,758,260.51/20,764.80
  6. Step 6: Final answer
    x = 15,639.85

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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.