Home / 31,986.78-44,138.08-18,553.13

Finding the Fourth Proportional to 31,986.78, 44,138.08 and 18,553.13

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Solution

The fourth proportional to 31,986.78, 44,138.08 and 18,553.13 is: 25,601.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,986.78 : 44,138.08 = 18,553.13 : x
  2. Step 2: Convert to fraction form
    31,986.78/44,138.08 = 18,553.13/x
  3. Step 3: Cross multiply
    31,986.78x = 44,138.08 × 18,553.13
  4. Step 4: Simplify right side
    31,986.78x = 818,899,536.19
  5. Step 5: Solve for x
    x = 818,899,536.19/31,986.78
  6. Step 6: Final answer
    x = 25,601.19

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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.