Home / 20,753.91-31,112.37-7,603.21

Finding the Fourth Proportional to 20,753.91, 31,112.37 and 7,603.21

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Solution

The fourth proportional to 20,753.91, 31,112.37 and 7,603.21 is: 11,398.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,753.91 : 31,112.37 = 7,603.21 : x
  2. Step 2: Convert to fraction form
    20,753.91/31,112.37 = 7,603.21/x
  3. Step 3: Cross multiply
    20,753.91x = 31,112.37 × 7,603.21
  4. Step 4: Simplify right side
    20,753.91x = 236,553,767.98
  5. Step 5: Solve for x
    x = 236,553,767.98/20,753.91
  6. Step 6: Final answer
    x = 11,398.03

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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.