Home / 20,560.54-30,840.80-11,776.68

Finding the Fourth Proportional to 20,560.54, 30,840.80 and 11,776.68

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Solution

The fourth proportional to 20,560.54, 30,840.80 and 11,776.68 is: 17,665.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,560.54 : 30,840.80 = 11,776.68 : x
  2. Step 2: Convert to fraction form
    20,560.54/30,840.80 = 11,776.68/x
  3. Step 3: Cross multiply
    20,560.54x = 30,840.80 × 11,776.68
  4. Step 4: Simplify right side
    20,560.54x = 363,202,232.54
  5. Step 5: Solve for x
    x = 363,202,232.54/20,560.54
  6. Step 6: Final answer
    x = 17,665.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.