Home / 12,939.44-17,852.28-7,974.32

Finding the Fourth Proportional to 12,939.44, 17,852.28 and 7,974.32

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Solution

The fourth proportional to 12,939.44, 17,852.28 and 7,974.32 is: 11,002.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,939.44 : 17,852.28 = 7,974.32 : x
  2. Step 2: Convert to fraction form
    12,939.44/17,852.28 = 7,974.32/x
  3. Step 3: Cross multiply
    12,939.44x = 17,852.28 × 7,974.32
  4. Step 4: Simplify right side
    12,939.44x = 142,359,793.45
  5. Step 5: Solve for x
    x = 142,359,793.45/12,939.44
  6. Step 6: Final answer
    x = 11,002.01

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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.