Home / 12,976.25-17,908.31-7,312.11

Finding the Fourth Proportional to 12,976.25, 17,908.31 and 7,312.11

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Solution

The fourth proportional to 12,976.25, 17,908.31 and 7,312.11 is: 10,091.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,976.25 : 17,908.31 = 7,312.11 : x
  2. Step 2: Convert to fraction form
    12,976.25/17,908.31 = 7,312.11/x
  3. Step 3: Cross multiply
    12,976.25x = 17,908.31 × 7,312.11
  4. Step 4: Simplify right side
    12,976.25x = 130,947,532.63
  5. Step 5: Solve for x
    x = 130,947,532.63/12,976.25
  6. Step 6: Final answer
    x = 10,091.32

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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.