Home / 15,051.72-20,771.14-8,245.69

Finding the Fourth Proportional to 15,051.72, 20,771.14 and 8,245.69

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Solution

The fourth proportional to 15,051.72, 20,771.14 and 8,245.69 is: 11,378.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,051.72 : 20,771.14 = 8,245.69 : x
  2. Step 2: Convert to fraction form
    15,051.72/20,771.14 = 8,245.69/x
  3. Step 3: Cross multiply
    15,051.72x = 20,771.14 × 8,245.69
  4. Step 4: Simplify right side
    15,051.72x = 171,272,381.39
  5. Step 5: Solve for x
    x = 171,272,381.39/15,051.72
  6. Step 6: Final answer
    x = 11,378.92

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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.