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Finding the Fourth Proportional to 26,165.91, 36,109.91 and 14,990.07

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Solution

The fourth proportional to 26,165.91, 36,109.91 and 14,990.07 is: 20,686.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,165.91 : 36,109.91 = 14,990.07 : x
  2. Step 2: Convert to fraction form
    26,165.91/36,109.91 = 14,990.07/x
  3. Step 3: Cross multiply
    26,165.91x = 36,109.91 × 14,990.07
  4. Step 4: Simplify right side
    26,165.91x = 541,290,078.59
  5. Step 5: Solve for x
    x = 541,290,078.59/26,165.91
  6. Step 6: Final answer
    x = 20,686.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.