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Finding the Fourth Proportional to 18,737, 25,845.74 and 12,361.33

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Solution

The fourth proportional to 18,737, 25,845.74 and 12,361.33 is: 17,051.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,737 : 25,845.74 = 12,361.33 : x
  2. Step 2: Convert to fraction form
    18,737/25,845.74 = 12,361.33/x
  3. Step 3: Cross multiply
    18,737x = 25,845.74 × 12,361.33
  4. Step 4: Simplify right side
    18,737x = 319,487,721.23
  5. Step 5: Solve for x
    x = 319,487,721.23/18,737
  6. Step 6: Final answer
    x = 17,051.17

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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.