Home / 20,097.78-27,742.14-13,719.81

Finding the Fourth Proportional to 20,097.78, 27,742.14 and 13,719.81

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Solution

The fourth proportional to 20,097.78, 27,742.14 and 13,719.81 is: 18,938.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,097.78 : 27,742.14 = 13,719.81 : x
  2. Step 2: Convert to fraction form
    20,097.78/27,742.14 = 13,719.81/x
  3. Step 3: Cross multiply
    20,097.78x = 27,742.14 × 13,719.81
  4. Step 4: Simplify right side
    20,097.78x = 380,616,889.79
  5. Step 5: Solve for x
    x = 380,616,889.79/20,097.78
  6. Step 6: Final answer
    x = 18,938.26

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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.