Home / 15,412.28-21,268.94-8,338.70

Finding the Fourth Proportional to 15,412.28, 21,268.94 and 8,338.70

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Solution

The fourth proportional to 15,412.28, 21,268.94 and 8,338.70 is: 11,507.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,412.28 : 21,268.94 = 8,338.70 : x
  2. Step 2: Convert to fraction form
    15,412.28/21,268.94 = 8,338.70/x
  3. Step 3: Cross multiply
    15,412.28x = 21,268.94 × 8,338.70
  4. Step 4: Simplify right side
    15,412.28x = 177,355,309.98
  5. Step 5: Solve for x
    x = 177,355,309.98/15,412.28
  6. Step 6: Final answer
    x = 11,507.40

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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.