Home / 20,486.34-30,696.12-7,992.18

Finding the Fourth Proportional to 20,486.34, 30,696.12 and 7,992.18

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Solution

The fourth proportional to 20,486.34, 30,696.12 and 7,992.18 is: 11,975.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,486.34 : 30,696.12 = 7,992.18 : x
  2. Step 2: Convert to fraction form
    20,486.34/30,696.12 = 7,992.18/x
  3. Step 3: Cross multiply
    20,486.34x = 30,696.12 × 7,992.18
  4. Step 4: Simplify right side
    20,486.34x = 245,328,916.34
  5. Step 5: Solve for x
    x = 245,328,916.34/20,486.34
  6. Step 6: Final answer
    x = 11,975.24

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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.