Home / 15,411.80-21,268.26-8,338.21

Finding the Fourth Proportional to 15,411.80, 21,268.26 and 8,338.21

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Solution

The fourth proportional to 15,411.80, 21,268.26 and 8,338.21 is: 11,506.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,411.80 : 21,268.26 = 8,338.21 : x
  2. Step 2: Convert to fraction form
    15,411.80/21,268.26 = 8,338.21/x
  3. Step 3: Cross multiply
    15,411.80x = 21,268.26 × 8,338.21
  4. Step 4: Simplify right side
    15,411.80x = 177,339,165.04
  5. Step 5: Solve for x
    x = 177,339,165.04/15,411.80
  6. Step 6: Final answer
    x = 11,506.71

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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.