Home / 20,832.89-31,249.54-5,250.52

Finding the Fourth Proportional to 20,832.89, 31,249.54 and 5,250.52

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Solution

The fourth proportional to 20,832.89, 31,249.54 and 5,250.52 is: 7,875.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,832.89 : 31,249.54 = 5,250.52 : x
  2. Step 2: Convert to fraction form
    20,832.89/31,249.54 = 5,250.52/x
  3. Step 3: Cross multiply
    20,832.89x = 31,249.54 × 5,250.52
  4. Step 4: Simplify right side
    20,832.89x = 164,076,178.51
  5. Step 5: Solve for x
    x = 164,076,178.51/20,832.89
  6. Step 6: Final answer
    x = 7,875.82

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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.