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Finding the Fourth Proportional to 26,845.70, 40,280.70 and 12,800.30

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Solution

The fourth proportional to 26,845.70, 40,280.70 and 12,800.30 is: 19,206.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,845.70 : 40,280.70 = 12,800.30 : x
  2. Step 2: Convert to fraction form
    26,845.70/40,280.70 = 12,800.30/x
  3. Step 3: Cross multiply
    26,845.70x = 40,280.70 × 12,800.30
  4. Step 4: Simplify right side
    26,845.70x = 515,605,044.21
  5. Step 5: Solve for x
    x = 515,605,044.21/26,845.70
  6. Step 6: Final answer
    x = 19,206.24

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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.