Home / 20,147.21-30,212.98-6,816.63

Finding the Fourth Proportional to 20,147.21, 30,212.98 and 6,816.63

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Solution

The fourth proportional to 20,147.21, 30,212.98 and 6,816.63 is: 10,222.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,147.21 : 30,212.98 = 6,816.63 : x
  2. Step 2: Convert to fraction form
    20,147.21/30,212.98 = 6,816.63/x
  3. Step 3: Cross multiply
    20,147.21x = 30,212.98 × 6,816.63
  4. Step 4: Simplify right side
    20,147.21x = 205,950,802.11
  5. Step 5: Solve for x
    x = 205,950,802.11/20,147.21
  6. Step 6: Final answer
    x = 10,222.30

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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.