Home / 12,936.78-17,838.62-8,737.74

Finding the Fourth Proportional to 12,936.78, 17,838.62 and 8,737.74

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Solution

The fourth proportional to 12,936.78, 17,838.62 and 8,737.74 is: 12,048.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,936.78 : 17,838.62 = 8,737.74 : x
  2. Step 2: Convert to fraction form
    12,936.78/17,838.62 = 8,737.74/x
  3. Step 3: Cross multiply
    12,936.78x = 17,838.62 × 8,737.74
  4. Step 4: Simplify right side
    12,936.78x = 155,869,223.52
  5. Step 5: Solve for x
    x = 155,869,223.52/12,936.78
  6. Step 6: Final answer
    x = 12,048.53

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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.