Home / 10,221.86-14,107.38-5,745.80

Finding the Fourth Proportional to 10,221.86, 14,107.38 and 5,745.80

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Solution

The fourth proportional to 10,221.86, 14,107.38 and 5,745.80 is: 7,929.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,221.86 : 14,107.38 = 5,745.80 : x
  2. Step 2: Convert to fraction form
    10,221.86/14,107.38 = 5,745.80/x
  3. Step 3: Cross multiply
    10,221.86x = 14,107.38 × 5,745.80
  4. Step 4: Simplify right side
    10,221.86x = 81,058,184.00
  5. Step 5: Solve for x
    x = 81,058,184.00/10,221.86
  6. Step 6: Final answer
    x = 7,929.89

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.