Home / 20,172.39-27,837.51-11,219.84

Finding the Fourth Proportional to 20,172.39, 27,837.51 and 11,219.84

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Solution

The fourth proportional to 20,172.39, 27,837.51 and 11,219.84 is: 15,483.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,172.39 : 27,837.51 = 11,219.84 : x
  2. Step 2: Convert to fraction form
    20,172.39/27,837.51 = 11,219.84/x
  3. Step 3: Cross multiply
    20,172.39x = 27,837.51 × 11,219.84
  4. Step 4: Simplify right side
    20,172.39x = 312,332,269.01
  5. Step 5: Solve for x
    x = 312,332,269.01/20,172.39
  6. Step 6: Final answer
    x = 15,483.16

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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.