Home / 20,360.13-28,096.62-11,407.60

Finding the Fourth Proportional to 20,360.13, 28,096.62 and 11,407.60

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Solution

The fourth proportional to 20,360.13, 28,096.62 and 11,407.60 is: 15,742.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,360.13 : 28,096.62 = 11,407.60 : x
  2. Step 2: Convert to fraction form
    20,360.13/28,096.62 = 11,407.60/x
  3. Step 3: Cross multiply
    20,360.13x = 28,096.62 × 11,407.60
  4. Step 4: Simplify right side
    20,360.13x = 320,515,058.82
  5. Step 5: Solve for x
    x = 320,515,058.82/20,360.13
  6. Step 6: Final answer
    x = 15,742.29

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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.