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Finding the Fourth Proportional to 26,130.20, 39,201.78 and 7,662.20

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Solution

The fourth proportional to 26,130.20, 39,201.78 and 7,662.20 is: 11,495.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,130.20 : 39,201.78 = 7,662.20 : x
  2. Step 2: Convert to fraction form
    26,130.20/39,201.78 = 7,662.20/x
  3. Step 3: Cross multiply
    26,130.20x = 39,201.78 × 7,662.20
  4. Step 4: Simplify right side
    26,130.20x = 300,371,682.71
  5. Step 5: Solve for x
    x = 300,371,682.71/26,130.20
  6. Step 6: Final answer
    x = 11,495.19

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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.