Home / 20,773.77-31,142.13-7,623.09

Finding the Fourth Proportional to 20,773.77, 31,142.13 and 7,623.09

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Solution

The fourth proportional to 20,773.77, 31,142.13 and 7,623.09 is: 11,427.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,773.77 : 31,142.13 = 7,623.09 : x
  2. Step 2: Convert to fraction form
    20,773.77/31,142.13 = 7,623.09/x
  3. Step 3: Cross multiply
    20,773.77x = 31,142.13 × 7,623.09
  4. Step 4: Simplify right side
    20,773.77x = 237,399,259.78
  5. Step 5: Solve for x
    x = 237,399,259.78/20,773.77
  6. Step 6: Final answer
    x = 11,427.84

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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.