Home / 10,220.94-14,101.38-6,640.38

Finding the Fourth Proportional to 10,220.94, 14,101.38 and 6,640.38

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Solution

The fourth proportional to 10,220.94, 14,101.38 and 6,640.38 is: 9,161.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,220.94 : 14,101.38 = 6,640.38 : x
  2. Step 2: Convert to fraction form
    10,220.94/14,101.38 = 6,640.38/x
  3. Step 3: Cross multiply
    10,220.94x = 14,101.38 × 6,640.38
  4. Step 4: Simplify right side
    10,220.94x = 93,638,521.72
  5. Step 5: Solve for x
    x = 93,638,521.72/10,220.94
  6. Step 6: Final answer
    x = 9,161.44

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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.