Home / 8,420.36-11,625.09-7,486.26

Finding the Fourth Proportional to 8,420.36, 11,625.09 and 7,486.26

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Solution

The fourth proportional to 8,420.36, 11,625.09 and 7,486.26 is: 10,335.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,420.36 : 11,625.09 = 7,486.26 : x
  2. Step 2: Convert to fraction form
    8,420.36/11,625.09 = 7,486.26/x
  3. Step 3: Cross multiply
    8,420.36x = 11,625.09 × 7,486.26
  4. Step 4: Simplify right side
    8,420.36x = 87,028,374.60
  5. Step 5: Solve for x
    x = 87,028,374.60/8,420.36
  6. Step 6: Final answer
    x = 10,335.48

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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.