Home / 15,021.19-20,728.41-8,306.41

Finding the Fourth Proportional to 15,021.19, 20,728.41 and 8,306.41

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Solution

The fourth proportional to 15,021.19, 20,728.41 and 8,306.41 is: 11,462.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,021.19 : 20,728.41 = 8,306.41 : x
  2. Step 2: Convert to fraction form
    15,021.19/20,728.41 = 8,306.41/x
  3. Step 3: Cross multiply
    15,021.19x = 20,728.41 × 8,306.41
  4. Step 4: Simplify right side
    15,021.19x = 172,178,672.11
  5. Step 5: Solve for x
    x = 172,178,672.11/15,021.19
  6. Step 6: Final answer
    x = 11,462.39

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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.