Home / 20,238.22-27,916.12-13,065.38

Finding the Fourth Proportional to 20,238.22, 27,916.12 and 13,065.38

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Solution

The fourth proportional to 20,238.22, 27,916.12 and 13,065.38 is: 18,022.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,238.22 : 27,916.12 = 13,065.38 : x
  2. Step 2: Convert to fraction form
    20,238.22/27,916.12 = 13,065.38/x
  3. Step 3: Cross multiply
    20,238.22x = 27,916.12 × 13,065.38
  4. Step 4: Simplify right side
    20,238.22x = 364,734,715.93
  5. Step 5: Solve for x
    x = 364,734,715.93/20,238.22
  6. Step 6: Final answer
    x = 18,022.07

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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.