Home / 13,387.54-18,474.52-7,419.15

Finding the Fourth Proportional to 13,387.54, 18,474.52 and 7,419.15

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Solution

The fourth proportional to 13,387.54, 18,474.52 and 7,419.15 is: 10,238.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,387.54 : 18,474.52 = 7,419.15 : x
  2. Step 2: Convert to fraction form
    13,387.54/18,474.52 = 7,419.15/x
  3. Step 3: Cross multiply
    13,387.54x = 18,474.52 × 7,419.15
  4. Step 4: Simplify right side
    13,387.54x = 137,065,197.96
  5. Step 5: Solve for x
    x = 137,065,197.96/13,387.54
  6. Step 6: Final answer
    x = 10,238.27

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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.