Home / 15,021.33-20,728.54-8,306.43

Finding the Fourth Proportional to 15,021.33, 20,728.54 and 8,306.43

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Solution

The fourth proportional to 15,021.33, 20,728.54 and 8,306.43 is: 11,462.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,021.33 : 20,728.54 = 8,306.43 : x
  2. Step 2: Convert to fraction form
    15,021.33/20,728.54 = 8,306.43/x
  3. Step 3: Cross multiply
    15,021.33x = 20,728.54 × 8,306.43
  4. Step 4: Simplify right side
    15,021.33x = 172,180,166.51
  5. Step 5: Solve for x
    x = 172,180,166.51/15,021.33
  6. Step 6: Final answer
    x = 11,462.38

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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.