Home / 12,345.35-18,520.94-4,025.40

Finding the Fourth Proportional to 12,345.35, 18,520.94 and 4,025.40

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Solution

The fourth proportional to 12,345.35, 18,520.94 and 4,025.40 is: 6,039.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,345.35 : 18,520.94 = 4,025.40 : x
  2. Step 2: Convert to fraction form
    12,345.35/18,520.94 = 4,025.40/x
  3. Step 3: Cross multiply
    12,345.35x = 18,520.94 × 4,025.40
  4. Step 4: Simplify right side
    12,345.35x = 74,554,171.75
  5. Step 5: Solve for x
    x = 74,554,171.75/12,345.35
  6. Step 6: Final answer
    x = 6,039.05

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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.