Home / 22,161.80-30,579.10-13,210.14

Finding the Fourth Proportional to 22,161.80, 30,579.10 and 13,210.14

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Solution

The fourth proportional to 22,161.80, 30,579.10 and 13,210.14 is: 18,227.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,161.80 : 30,579.10 = 13,210.14 : x
  2. Step 2: Convert to fraction form
    22,161.80/30,579.10 = 13,210.14/x
  3. Step 3: Cross multiply
    22,161.80x = 30,579.10 × 13,210.14
  4. Step 4: Simplify right side
    22,161.80x = 403,954,052.86
  5. Step 5: Solve for x
    x = 403,954,052.86/22,161.80
  6. Step 6: Final answer
    x = 18,227.49

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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.