Home / 18,025.81-27,038.68-4,879.20

Finding the Fourth Proportional to 18,025.81, 27,038.68 and 4,879.20

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Solution

The fourth proportional to 18,025.81, 27,038.68 and 4,879.20 is: 7,318.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,025.81 : 27,038.68 = 4,879.20 : x
  2. Step 2: Convert to fraction form
    18,025.81/27,038.68 = 4,879.20/x
  3. Step 3: Cross multiply
    18,025.81x = 27,038.68 × 4,879.20
  4. Step 4: Simplify right side
    18,025.81x = 131,927,216.65
  5. Step 5: Solve for x
    x = 131,927,216.65/18,025.81
  6. Step 6: Final answer
    x = 7,318.80

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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.