Home / 15,411.95-21,268.40-8,338.22

Finding the Fourth Proportional to 15,411.95, 21,268.40 and 8,338.22

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Solution

The fourth proportional to 15,411.95, 21,268.40 and 8,338.22 is: 11,506.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,411.95 : 21,268.40 = 8,338.22 : x
  2. Step 2: Convert to fraction form
    15,411.95/21,268.40 = 8,338.22/x
  3. Step 3: Cross multiply
    15,411.95x = 21,268.40 × 8,338.22
  4. Step 4: Simplify right side
    15,411.95x = 177,340,450.21
  5. Step 5: Solve for x
    x = 177,340,450.21/15,411.95
  6. Step 6: Final answer
    x = 11,506.69

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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.