Home / 20,529.67-28,331.77-11,455.82

Finding the Fourth Proportional to 20,529.67, 28,331.77 and 11,455.82

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Solution

The fourth proportional to 20,529.67, 28,331.77 and 11,455.82 is: 15,809.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,529.67 : 28,331.77 = 11,455.82 : x
  2. Step 2: Convert to fraction form
    20,529.67/28,331.77 = 11,455.82/x
  3. Step 3: Cross multiply
    20,529.67x = 28,331.77 × 11,455.82
  4. Step 4: Simplify right side
    20,529.67x = 324,563,662.29
  5. Step 5: Solve for x
    x = 324,563,662.29/20,529.67
  6. Step 6: Final answer
    x = 15,809.49

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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.