Home / 20,416.25-30,621.11-7,941.98

Finding the Fourth Proportional to 20,416.25, 30,621.11 and 7,941.98

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Solution

The fourth proportional to 20,416.25, 30,621.11 and 7,941.98 is: 11,911.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,416.25 : 30,621.11 = 7,941.98 : x
  2. Step 2: Convert to fraction form
    20,416.25/30,621.11 = 7,941.98/x
  3. Step 3: Cross multiply
    20,416.25x = 30,621.11 × 7,941.98
  4. Step 4: Simplify right side
    20,416.25x = 243,192,050.38
  5. Step 5: Solve for x
    x = 243,192,050.38/20,416.25
  6. Step 6: Final answer
    x = 11,911.69

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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.