Home / 20,120.08-27,762.76-11,167.66

Finding the Fourth Proportional to 20,120.08, 27,762.76 and 11,167.66

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Solution

The fourth proportional to 20,120.08, 27,762.76 and 11,167.66 is: 15,409.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,120.08 : 27,762.76 = 11,167.66 : x
  2. Step 2: Convert to fraction form
    20,120.08/27,762.76 = 11,167.66/x
  3. Step 3: Cross multiply
    20,120.08x = 27,762.76 × 11,167.66
  4. Step 4: Simplify right side
    20,120.08x = 310,045,064.34
  5. Step 5: Solve for x
    x = 310,045,064.34/20,120.08
  6. Step 6: Final answer
    x = 15,409.73

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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.