Home / 15,411.77-21,268.20-8,338.20

Finding the Fourth Proportional to 15,411.77, 21,268.20 and 8,338.20

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Solution

The fourth proportional to 15,411.77, 21,268.20 and 8,338.20 is: 11,506.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,411.77 : 21,268.20 = 8,338.20 : x
  2. Step 2: Convert to fraction form
    15,411.77/21,268.20 = 8,338.20/x
  3. Step 3: Cross multiply
    15,411.77x = 21,268.20 × 8,338.20
  4. Step 4: Simplify right side
    15,411.77x = 177,338,505.24
  5. Step 5: Solve for x
    x = 177,338,505.24/15,411.77
  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.