Home / 15,021.48-20,728.96-8,647.80

Finding the Fourth Proportional to 15,021.48, 20,728.96 and 8,647.80

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Solution

The fourth proportional to 15,021.48, 20,728.96 and 8,647.80 is: 11,933.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,021.48 : 20,728.96 = 8,647.80 : x
  2. Step 2: Convert to fraction form
    15,021.48/20,728.96 = 8,647.80/x
  3. Step 3: Cross multiply
    15,021.48x = 20,728.96 × 8,647.80
  4. Step 4: Simplify right side
    15,021.48x = 179,259,900.29
  5. Step 5: Solve for x
    x = 179,259,900.29/15,021.48
  6. Step 6: Final answer
    x = 11,933.57

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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.