Home / 19,939.05-27,515.70-10,986.39

Finding the Fourth Proportional to 19,939.05, 27,515.70 and 10,986.39

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Solution

The fourth proportional to 19,939.05, 27,515.70 and 10,986.39 is: 15,161.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,939.05 : 27,515.70 = 10,986.39 : x
  2. Step 2: Convert to fraction form
    19,939.05/27,515.70 = 10,986.39/x
  3. Step 3: Cross multiply
    19,939.05x = 27,515.70 × 10,986.39
  4. Step 4: Simplify right side
    19,939.05x = 302,298,211.32
  5. Step 5: Solve for x
    x = 302,298,211.32/19,939.05
  6. Step 6: Final answer
    x = 15,161.11

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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.