Home / 20,450.77-30,671.59-7,971.13

Finding the Fourth Proportional to 20,450.77, 30,671.59 and 7,971.13

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Solution

The fourth proportional to 20,450.77, 30,671.59 and 7,971.13 is: 11,954.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,450.77 : 30,671.59 = 7,971.13 : x
  2. Step 2: Convert to fraction form
    20,450.77/30,671.59 = 7,971.13/x
  3. Step 3: Cross multiply
    20,450.77x = 30,671.59 × 7,971.13
  4. Step 4: Simplify right side
    20,450.77x = 244,487,231.20
  5. Step 5: Solve for x
    x = 244,487,231.20/20,450.77
  6. Step 6: Final answer
    x = 11,954.92

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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.