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Finding the Fourth Proportional to 26,089.88, 39,134.81 and 12,238.88

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Solution

The fourth proportional to 26,089.88, 39,134.81 and 12,238.88 is: 18,358.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,089.88 : 39,134.81 = 12,238.88 : x
  2. Step 2: Convert to fraction form
    26,089.88/39,134.81 = 12,238.88/x
  3. Step 3: Cross multiply
    26,089.88x = 39,134.81 × 12,238.88
  4. Step 4: Simplify right side
    26,089.88x = 478,966,078.34
  5. Step 5: Solve for x
    x = 478,966,078.34/26,089.88
  6. Step 6: Final answer
    x = 18,358.31

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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.