Home / 20,161.51-27,820.77-11,207.57

Finding the Fourth Proportional to 20,161.51, 27,820.77 and 11,207.57

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Solution

The fourth proportional to 20,161.51, 27,820.77 and 11,207.57 is: 15,465.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,161.51 : 27,820.77 = 11,207.57 : x
  2. Step 2: Convert to fraction form
    20,161.51/27,820.77 = 11,207.57/x
  3. Step 3: Cross multiply
    20,161.51x = 27,820.77 × 11,207.57
  4. Step 4: Simplify right side
    20,161.51x = 311,803,046.10
  5. Step 5: Solve for x
    x = 311,803,046.10/20,161.51
  6. Step 6: Final answer
    x = 15,465.26

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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.