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Finding the Fourth Proportional to 26,771.68, 40,105.68 and 12,930.40

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Solution

The fourth proportional to 26,771.68, 40,105.68 and 12,930.40 is: 19,370.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,771.68 : 40,105.68 = 12,930.40 : x
  2. Step 2: Convert to fraction form
    26,771.68/40,105.68 = 12,930.40/x
  3. Step 3: Cross multiply
    26,771.68x = 40,105.68 × 12,930.40
  4. Step 4: Simplify right side
    26,771.68x = 518,582,484.67
  5. Step 5: Solve for x
    x = 518,582,484.67/26,771.68
  6. Step 6: Final answer
    x = 19,370.56

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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.