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Finding the Fourth Proportional to 26,159.40, 39,238.92 and 8,630.64

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Solution

The fourth proportional to 26,159.40, 39,238.92 and 8,630.64 is: 12,945.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,159.40 : 39,238.92 = 8,630.64 : x
  2. Step 2: Convert to fraction form
    26,159.40/39,238.92 = 8,630.64/x
  3. Step 3: Cross multiply
    26,159.40x = 39,238.92 × 8,630.64
  4. Step 4: Simplify right side
    26,159.40x = 338,656,992.51
  5. Step 5: Solve for x
    x = 338,656,992.51/26,159.40
  6. Step 6: Final answer
    x = 12,945.90

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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.