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Finding the Fourth Proportional to 26,838.90, 40,258.72 and 8,119.08

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Solution

The fourth proportional to 26,838.90, 40,258.72 and 8,119.08 is: 12,178.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,838.90 : 40,258.72 = 8,119.08 : x
  2. Step 2: Convert to fraction form
    26,838.90/40,258.72 = 8,119.08/x
  3. Step 3: Cross multiply
    26,838.90x = 40,258.72 × 8,119.08
  4. Step 4: Simplify right side
    26,838.90x = 326,863,768.38
  5. Step 5: Solve for x
    x = 326,863,768.38/26,838.90
  6. Step 6: Final answer
    x = 12,178.73

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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.