Home / 18,534.25-27,731.62-12,998.40

Finding the Fourth Proportional to 18,534.25, 27,731.62 and 12,998.40

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Solution

The fourth proportional to 18,534.25, 27,731.62 and 12,998.40 is: 19,448.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,534.25 : 27,731.62 = 12,998.40 : x
  2. Step 2: Convert to fraction form
    18,534.25/27,731.62 = 12,998.40/x
  3. Step 3: Cross multiply
    18,534.25x = 27,731.62 × 12,998.40
  4. Step 4: Simplify right side
    18,534.25x = 360,466,689.41
  5. Step 5: Solve for x
    x = 360,466,689.41/18,534.25
  6. Step 6: Final answer
    x = 19,448.68

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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.