Home / 20,126.32-30,181.06-7,639.46

Finding the Fourth Proportional to 20,126.32, 30,181.06 and 7,639.46

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Solution

The fourth proportional to 20,126.32, 30,181.06 and 7,639.46 is: 11,456.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,126.32 : 30,181.06 = 7,639.46 : x
  2. Step 2: Convert to fraction form
    20,126.32/30,181.06 = 7,639.46/x
  3. Step 3: Cross multiply
    20,126.32x = 30,181.06 × 7,639.46
  4. Step 4: Simplify right side
    20,126.32x = 230,567,099.25
  5. Step 5: Solve for x
    x = 230,567,099.25/20,126.32
  6. Step 6: Final answer
    x = 11,456.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.