Home / 20,465.19-30,519.76-18,197.29

Finding the Fourth Proportional to 20,465.19, 30,519.76 and 18,197.29

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Solution

The fourth proportional to 20,465.19, 30,519.76 and 18,197.29 is: 27,137.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,465.19 : 30,519.76 = 18,197.29 : x
  2. Step 2: Convert to fraction form
    20,465.19/30,519.76 = 18,197.29/x
  3. Step 3: Cross multiply
    20,465.19x = 30,519.76 × 18,197.29
  4. Step 4: Simplify right side
    20,465.19x = 555,376,918.44
  5. Step 5: Solve for x
    x = 555,376,918.44/20,465.19
  6. Step 6: Final answer
    x = 27,137.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.