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Finding the Fourth Proportional to 26,856.20, 40,269.90 and 11,256.20

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Solution

The fourth proportional to 26,856.20, 40,269.90 and 11,256.20 is: 16,878.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,856.20 : 40,269.90 = 11,256.20 : x
  2. Step 2: Convert to fraction form
    26,856.20/40,269.90 = 11,256.20/x
  3. Step 3: Cross multiply
    26,856.20x = 40,269.90 × 11,256.20
  4. Step 4: Simplify right side
    26,856.20x = 453,286,048.38
  5. Step 5: Solve for x
    x = 453,286,048.38/26,856.20
  6. Step 6: Final answer
    x = 16,878.26

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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.