Home / 12,579.07-18,867.52-4,258.90

Finding the Fourth Proportional to 12,579.07, 18,867.52 and 4,258.90

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Solution

The fourth proportional to 12,579.07, 18,867.52 and 4,258.90 is: 6,387.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,579.07 : 18,867.52 = 4,258.90 : x
  2. Step 2: Convert to fraction form
    12,579.07/18,867.52 = 4,258.90/x
  3. Step 3: Cross multiply
    12,579.07x = 18,867.52 × 4,258.90
  4. Step 4: Simplify right side
    12,579.07x = 80,354,880.93
  5. Step 5: Solve for x
    x = 80,354,880.93/12,579.07
  6. Step 6: Final answer
    x = 6,387.98

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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.