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Finding the Fourth Proportional to 26,768.08, 40,130.68 and 12,721.08

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Solution

The fourth proportional to 26,768.08, 40,130.68 and 12,721.08 is: 19,071.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,768.08 : 40,130.68 = 12,721.08 : x
  2. Step 2: Convert to fraction form
    26,768.08/40,130.68 = 12,721.08/x
  3. Step 3: Cross multiply
    26,768.08x = 40,130.68 × 12,721.08
  4. Step 4: Simplify right side
    26,768.08x = 510,505,590.73
  5. Step 5: Solve for x
    x = 510,505,590.73/26,768.08
  6. Step 6: Final answer
    x = 19,071.43

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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.