Home / 20,102.10-27,742.37-11,151.29

Finding the Fourth Proportional to 20,102.10, 27,742.37 and 11,151.29

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Solution

The fourth proportional to 20,102.10, 27,742.37 and 11,151.29 is: 15,389.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,102.10 : 27,742.37 = 11,151.29 : x
  2. Step 2: Convert to fraction form
    20,102.10/27,742.37 = 11,151.29/x
  3. Step 3: Cross multiply
    20,102.10x = 27,742.37 × 11,151.29
  4. Step 4: Simplify right side
    20,102.10x = 309,363,226.76
  5. Step 5: Solve for x
    x = 309,363,226.76/20,102.10
  6. Step 6: Final answer
    x = 15,389.60

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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.