Home / 22,820.80-31,514.34-21,578.30

Finding the Fourth Proportional to 22,820.80, 31,514.34 and 21,578.30

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Solution

The fourth proportional to 22,820.80, 31,514.34 and 21,578.30 is: 29,798.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,820.80 : 31,514.34 = 21,578.30 : x
  2. Step 2: Convert to fraction form
    22,820.80/31,514.34 = 21,578.30/x
  3. Step 3: Cross multiply
    22,820.80x = 31,514.34 × 21,578.30
  4. Step 4: Simplify right side
    22,820.80x = 680,025,882.82
  5. Step 5: Solve for x
    x = 680,025,882.82/22,820.80
  6. Step 6: Final answer
    x = 29,798.51

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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.