Home / 15,021.40-20,729.14-8,306.84

Finding the Fourth Proportional to 15,021.40, 20,729.14 and 8,306.84

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Solution

The fourth proportional to 15,021.40, 20,729.14 and 8,306.84 is: 11,463.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,021.40 : 20,729.14 = 8,306.84 : x
  2. Step 2: Convert to fraction form
    15,021.40/20,729.14 = 8,306.84/x
  3. Step 3: Cross multiply
    15,021.40x = 20,729.14 × 8,306.84
  4. Step 4: Simplify right side
    15,021.40x = 172,193,649.32
  5. Step 5: Solve for x
    x = 172,193,649.32/15,021.40
  6. Step 6: Final answer
    x = 11,463.22

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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.