Home / 13,140.71-19,719.52-5,241.88

Finding the Fourth Proportional to 13,140.71, 19,719.52 and 5,241.88

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Solution

The fourth proportional to 13,140.71, 19,719.52 and 5,241.88 is: 7,866.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,140.71 : 19,719.52 = 5,241.88 : x
  2. Step 2: Convert to fraction form
    13,140.71/19,719.52 = 5,241.88/x
  3. Step 3: Cross multiply
    13,140.71x = 19,719.52 × 5,241.88
  4. Step 4: Simplify right side
    13,140.71x = 103,367,258.12
  5. Step 5: Solve for x
    x = 103,367,258.12/13,140.71
  6. Step 6: Final answer
    x = 7,866.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.