Home / 20,753.05-31,129.80-5,962.09

Finding the Fourth Proportional to 20,753.05, 31,129.80 and 5,962.09

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Solution

The fourth proportional to 20,753.05, 31,129.80 and 5,962.09 is: 8,943.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,753.05 : 31,129.80 = 5,962.09 : x
  2. Step 2: Convert to fraction form
    20,753.05/31,129.80 = 5,962.09/x
  3. Step 3: Cross multiply
    20,753.05x = 31,129.80 × 5,962.09
  4. Step 4: Simplify right side
    20,753.05x = 185,598,669.28
  5. Step 5: Solve for x
    x = 185,598,669.28/20,753.05
  6. Step 6: Final answer
    x = 8,943.20

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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.