Home / 12,258.72-18,388.26-6,426.72

Finding the Fourth Proportional to 12,258.72, 18,388.26 and 6,426.72

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Solution

The fourth proportional to 12,258.72, 18,388.26 and 6,426.72 is: 9,640.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,258.72 : 18,388.26 = 6,426.72 : x
  2. Step 2: Convert to fraction form
    12,258.72/18,388.26 = 6,426.72/x
  3. Step 3: Cross multiply
    12,258.72x = 18,388.26 × 6,426.72
  4. Step 4: Simplify right side
    12,258.72x = 118,176,198.31
  5. Step 5: Solve for x
    x = 118,176,198.31/12,258.72
  6. Step 6: Final answer
    x = 9,640.17

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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.