Home / 19,918.36-27,487.11-10,965.70

Finding the Fourth Proportional to 19,918.36, 27,487.11 and 10,965.70

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Solution

The fourth proportional to 19,918.36, 27,487.11 and 10,965.70 is: 15,132.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,918.36 : 27,487.11 = 10,965.70 : x
  2. Step 2: Convert to fraction form
    19,918.36/27,487.11 = 10,965.70/x
  3. Step 3: Cross multiply
    19,918.36x = 27,487.11 × 10,965.70
  4. Step 4: Simplify right side
    19,918.36x = 301,415,402.13
  5. Step 5: Solve for x
    x = 301,415,402.13/19,918.36
  6. Step 6: Final answer
    x = 15,132.54

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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.