Home / 20,686.49-31,041.38-11,198.56

Finding the Fourth Proportional to 20,686.49, 31,041.38 and 11,198.56

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Solution

The fourth proportional to 20,686.49, 31,041.38 and 11,198.56 is: 16,804.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,686.49 : 31,041.38 = 11,198.56 : x
  2. Step 2: Convert to fraction form
    20,686.49/31,041.38 = 11,198.56/x
  3. Step 3: Cross multiply
    20,686.49x = 31,041.38 × 11,198.56
  4. Step 4: Simplify right side
    20,686.49x = 347,618,756.41
  5. Step 5: Solve for x
    x = 347,618,756.41/20,686.49
  6. Step 6: Final answer
    x = 16,804.14

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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.