Home / 18,647.18-27,970.78-12,786.02

Finding the Fourth Proportional to 18,647.18, 27,970.78 and 12,786.02

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Solution

The fourth proportional to 18,647.18, 27,970.78 and 12,786.02 is: 19,179.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,647.18 : 27,970.78 = 12,786.02 : x
  2. Step 2: Convert to fraction form
    18,647.18/27,970.78 = 12,786.02/x
  3. Step 3: Cross multiply
    18,647.18x = 27,970.78 × 12,786.02
  4. Step 4: Simplify right side
    18,647.18x = 357,634,952.50
  5. Step 5: Solve for x
    x = 357,634,952.50/18,647.18
  6. Step 6: Final answer
    x = 19,179.04

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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.