Home / 20,443.36-30,661.98-6,400.12

Finding the Fourth Proportional to 20,443.36, 30,661.98 and 6,400.12

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Solution

The fourth proportional to 20,443.36, 30,661.98 and 6,400.12 is: 9,599.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,443.36 : 30,661.98 = 6,400.12 : x
  2. Step 2: Convert to fraction form
    20,443.36/30,661.98 = 6,400.12/x
  3. Step 3: Cross multiply
    20,443.36x = 30,661.98 × 6,400.12
  4. Step 4: Simplify right side
    20,443.36x = 196,240,351.44
  5. Step 5: Solve for x
    x = 196,240,351.44/20,443.36
  6. Step 6: Final answer
    x = 9,599.22

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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.