Home / 18,647.34-27,970.92-12,786.18

Finding the Fourth Proportional to 18,647.34, 27,970.92 and 12,786.18

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Solution

The fourth proportional to 18,647.34, 27,970.92 and 12,786.18 is: 19,179.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,647.34 : 27,970.92 = 12,786.18 : x
  2. Step 2: Convert to fraction form
    18,647.34/27,970.92 = 12,786.18/x
  3. Step 3: Cross multiply
    18,647.34x = 27,970.92 × 12,786.18
  4. Step 4: Simplify right side
    18,647.34x = 357,641,217.89
  5. Step 5: Solve for x
    x = 357,641,217.89/18,647.34
  6. Step 6: Final answer
    x = 19,179.21

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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.