Home / 20,015.16-27,621.12-10,940.78

Finding the Fourth Proportional to 20,015.16, 27,621.12 and 10,940.78

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Solution

The fourth proportional to 20,015.16, 27,621.12 and 10,940.78 is: 15,098.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,015.16 : 27,621.12 = 10,940.78 : x
  2. Step 2: Convert to fraction form
    20,015.16/27,621.12 = 10,940.78/x
  3. Step 3: Cross multiply
    20,015.16x = 27,621.12 × 10,940.78
  4. Step 4: Simplify right side
    20,015.16x = 302,196,597.27
  5. Step 5: Solve for x
    x = 302,196,597.27/20,015.16
  6. Step 6: Final answer
    x = 15,098.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.