Home / 18,228.21-27,342.36-13,143.48

Finding the Fourth Proportional to 18,228.21, 27,342.36 and 13,143.48

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Solution

The fourth proportional to 18,228.21, 27,342.36 and 13,143.48 is: 19,715.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,228.21 : 27,342.36 = 13,143.48 : x
  2. Step 2: Convert to fraction form
    18,228.21/27,342.36 = 13,143.48/x
  3. Step 3: Cross multiply
    18,228.21x = 27,342.36 × 13,143.48
  4. Step 4: Simplify right side
    18,228.21x = 359,373,761.81
  5. Step 5: Solve for x
    x = 359,373,761.81/18,228.21
  6. Step 6: Final answer
    x = 19,715.25

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1.5x scale

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.