Home / 20,103.13-27,742.95-11,151.46

Finding the Fourth Proportional to 20,103.13, 27,742.95 and 11,151.46

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Solution

The fourth proportional to 20,103.13, 27,742.95 and 11,151.46 is: 15,389.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,103.13 : 27,742.95 = 11,151.46 : x
  2. Step 2: Convert to fraction form
    20,103.13/27,742.95 = 11,151.46/x
  3. Step 3: Cross multiply
    20,103.13x = 27,742.95 × 11,151.46
  4. Step 4: Simplify right side
    20,103.13x = 309,374,397.21
  5. Step 5: Solve for x
    x = 309,374,397.21/20,103.13
  6. Step 6: Final answer
    x = 15,389.36

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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.