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Finding the Fourth Proportional to 26,979, 40,473.35 and 8,258.68

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Solution

The fourth proportional to 26,979, 40,473.35 and 8,258.68 is: 12,389.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,979 : 40,473.35 = 8,258.68 : x
  2. Step 2: Convert to fraction form
    26,979/40,473.35 = 8,258.68/x
  3. Step 3: Cross multiply
    26,979x = 40,473.35 × 8,258.68
  4. Step 4: Simplify right side
    26,979x = 334,256,446.18
  5. Step 5: Solve for x
    x = 334,256,446.18/26,979
  6. Step 6: Final answer
    x = 12,389.50

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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.