Home / 19,121.22-28,649.47-11,710.20

Finding the Fourth Proportional to 19,121.22, 28,649.47 and 11,710.20

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Solution

The fourth proportional to 19,121.22, 28,649.47 and 11,710.20 is: 17,545.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,121.22 : 28,649.47 = 11,710.20 : x
  2. Step 2: Convert to fraction form
    19,121.22/28,649.47 = 11,710.20/x
  3. Step 3: Cross multiply
    19,121.22x = 28,649.47 × 11,710.20
  4. Step 4: Simplify right side
    19,121.22x = 335,491,156.65
  5. Step 5: Solve for x
    x = 335,491,156.65/19,121.22
  6. Step 6: Final answer
    x = 17,545.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.