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Finding the Fourth Proportional to 26,807.60, 40,221.15 and 9,279.20

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Solution

The fourth proportional to 26,807.60, 40,221.15 and 9,279.20 is: 13,922.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,807.60 : 40,221.15 = 9,279.20 : x
  2. Step 2: Convert to fraction form
    26,807.60/40,221.15 = 9,279.20/x
  3. Step 3: Cross multiply
    26,807.60x = 40,221.15 × 9,279.20
  4. Step 4: Simplify right side
    26,807.60x = 373,219,893.97
  5. Step 5: Solve for x
    x = 373,219,893.97/26,807.60
  6. Step 6: Final answer
    x = 13,922.17

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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.