Home / 12,345.90-18,521.78-4,025.97

Finding the Fourth Proportional to 12,345.90, 18,521.78 and 4,025.97

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Solution

The fourth proportional to 12,345.90, 18,521.78 and 4,025.97 is: 6,039.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,345.90 : 18,521.78 = 4,025.97 : x
  2. Step 2: Convert to fraction form
    12,345.90/18,521.78 = 4,025.97/x
  3. Step 3: Cross multiply
    12,345.90x = 18,521.78 × 4,025.97
  4. Step 4: Simplify right side
    12,345.90x = 74,568,110.50
  5. Step 5: Solve for x
    x = 74,568,110.50/12,345.90
  6. Step 6: Final answer
    x = 6,039.91

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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.