Home / 12,976.32-17,908.65-7,943.87

Finding the Fourth Proportional to 12,976.32, 17,908.65 and 7,943.87

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Solution

The fourth proportional to 12,976.32, 17,908.65 and 7,943.87 is: 10,963.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,976.32 : 17,908.65 = 7,943.87 : x
  2. Step 2: Convert to fraction form
    12,976.32/17,908.65 = 7,943.87/x
  3. Step 3: Cross multiply
    12,976.32x = 17,908.65 × 7,943.87
  4. Step 4: Simplify right side
    12,976.32x = 142,263,897.93
  5. Step 5: Solve for x
    x = 142,263,897.93/12,976.32
  6. Step 6: Final answer
    x = 10,963.35

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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.