Home / 12,979.44-17,910.52-7,312.34

Finding the Fourth Proportional to 12,979.44, 17,910.52 and 7,312.34

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Solution

The fourth proportional to 12,979.44, 17,910.52 and 7,312.34 is: 10,090.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,979.44 : 17,910.52 = 7,312.34 : x
  2. Step 2: Convert to fraction form
    12,979.44/17,910.52 = 7,312.34/x
  3. Step 3: Cross multiply
    12,979.44x = 17,910.52 × 7,312.34
  4. Step 4: Simplify right side
    12,979.44x = 130,967,838.31
  5. Step 5: Solve for x
    x = 130,967,838.31/12,979.44
  6. Step 6: Final answer
    x = 10,090.41

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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.