Home / 12,503.89-17,255.66-7,126.21

Finding the Fourth Proportional to 12,503.89, 17,255.66 and 7,126.21

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Solution

The fourth proportional to 12,503.89, 17,255.66 and 7,126.21 is: 9,834.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,503.89 : 17,255.66 = 7,126.21 : x
  2. Step 2: Convert to fraction form
    12,503.89/17,255.66 = 7,126.21/x
  3. Step 3: Cross multiply
    12,503.89x = 17,255.66 × 7,126.21
  4. Step 4: Simplify right side
    12,503.89x = 122,967,456.85
  5. Step 5: Solve for x
    x = 122,967,456.85/12,503.89
  6. Step 6: Final answer
    x = 9,834.34

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Half scale
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Double scale
Find fourth proportional to 12,504.89, 17,257.04 and 7,127.21
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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.