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Finding the Fourth Proportional to 26,928.59, 40,398.87 and 8,210.08

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Solution

The fourth proportional to 26,928.59, 40,398.87 and 8,210.08 is: 12,316.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,928.59 : 40,398.87 = 8,210.08 : x
  2. Step 2: Convert to fraction form
    26,928.59/40,398.87 = 8,210.08/x
  3. Step 3: Cross multiply
    26,928.59x = 40,398.87 × 8,210.08
  4. Step 4: Simplify right side
    26,928.59x = 331,677,853.61
  5. Step 5: Solve for x
    x = 331,677,853.61/26,928.59
  6. Step 6: Final answer
    x = 12,316.94

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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.