Home / 13,331.45-18,395.28-7,665.09

Finding the Fourth Proportional to 13,331.45, 18,395.28 and 7,665.09

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Solution

The fourth proportional to 13,331.45, 18,395.28 and 7,665.09 is: 10,576.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,331.45 : 18,395.28 = 7,665.09 : x
  2. Step 2: Convert to fraction form
    13,331.45/18,395.28 = 7,665.09/x
  3. Step 3: Cross multiply
    13,331.45x = 18,395.28 × 7,665.09
  4. Step 4: Simplify right side
    13,331.45x = 141,001,476.78
  5. Step 5: Solve for x
    x = 141,001,476.78/13,331.45
  6. Step 6: Final answer
    x = 10,576.61

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Half scale
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Double scale
Find fourth proportional to 13,332.45, 18,396.66 and 7,666.09
Similar ratio
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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.