Home / 12,927.36-17,838.18-7,894.38

Finding the Fourth Proportional to 12,927.36, 17,838.18 and 7,894.38

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Solution

The fourth proportional to 12,927.36, 17,838.18 and 7,894.38 is: 10,893.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,927.36 : 17,838.18 = 7,894.38 : x
  2. Step 2: Convert to fraction form
    12,927.36/17,838.18 = 7,894.38/x
  3. Step 3: Cross multiply
    12,927.36x = 17,838.18 × 7,894.38
  4. Step 4: Simplify right side
    12,927.36x = 140,821,371.43
  5. Step 5: Solve for x
    x = 140,821,371.43/12,927.36
  6. Step 6: Final answer
    x = 10,893.28

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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.