Home / 20,025.79-30,039.39-6,878.07

Finding the Fourth Proportional to 20,025.79, 30,039.39 and 6,878.07

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Solution

The fourth proportional to 20,025.79, 30,039.39 and 6,878.07 is: 10,317.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,025.79 : 30,039.39 = 6,878.07 : x
  2. Step 2: Convert to fraction form
    20,025.79/30,039.39 = 6,878.07/x
  3. Step 3: Cross multiply
    20,025.79x = 30,039.39 × 6,878.07
  4. Step 4: Simplify right side
    20,025.79x = 206,613,027.18
  5. Step 5: Solve for x
    x = 206,613,027.18/20,025.79
  6. Step 6: Final answer
    x = 10,317.35

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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.