Home / 19,918.68-27,486.18-11,535.72

Finding the Fourth Proportional to 19,918.68, 27,486.18 and 11,535.72

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Solution

The fourth proportional to 19,918.68, 27,486.18 and 11,535.72 is: 15,918.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,918.68 : 27,486.18 = 11,535.72 : x
  2. Step 2: Convert to fraction form
    19,918.68/27,486.18 = 11,535.72/x
  3. Step 3: Cross multiply
    19,918.68x = 27,486.18 × 11,535.72
  4. Step 4: Simplify right side
    19,918.68x = 317,072,876.35
  5. Step 5: Solve for x
    x = 317,072,876.35/19,918.68
  6. Step 6: Final answer
    x = 15,918.37

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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.