Home / 13,236.18-18,266.36-7,647.18

Finding the Fourth Proportional to 13,236.18, 18,266.36 and 7,647.18

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Solution

The fourth proportional to 13,236.18, 18,266.36 and 7,647.18 is: 10,553.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,236.18 : 18,266.36 = 7,647.18 : x
  2. Step 2: Convert to fraction form
    13,236.18/18,266.36 = 7,647.18/x
  3. Step 3: Cross multiply
    13,236.18x = 18,266.36 × 7,647.18
  4. Step 4: Simplify right side
    13,236.18x = 139,686,142.86
  5. Step 5: Solve for x
    x = 139,686,142.86/13,236.18
  6. Step 6: Final answer
    x = 10,553.36

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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.