Home / 21,203.82-31,775.67-15,613.29

Finding the Fourth Proportional to 21,203.82, 31,775.67 and 15,613.29

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Solution

The fourth proportional to 21,203.82, 31,775.67 and 15,613.29 is: 23,397.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,203.82 : 31,775.67 = 15,613.29 : x
  2. Step 2: Convert to fraction form
    21,203.82/31,775.67 = 15,613.29/x
  3. Step 3: Cross multiply
    21,203.82x = 31,775.67 × 15,613.29
  4. Step 4: Simplify right side
    21,203.82x = 496,122,750.65
  5. Step 5: Solve for x
    x = 496,122,750.65/21,203.82
  6. Step 6: Final answer
    x = 23,397.80

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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.