Home / 13,828.49-19,084.78-8,454.07

Finding the Fourth Proportional to 13,828.49, 19,084.78 and 8,454.07

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Solution

The fourth proportional to 13,828.49, 19,084.78 and 8,454.07 is: 11,667.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,828.49 : 19,084.78 = 8,454.07 : x
  2. Step 2: Convert to fraction form
    13,828.49/19,084.78 = 8,454.07/x
  3. Step 3: Cross multiply
    13,828.49x = 19,084.78 × 8,454.07
  4. Step 4: Simplify right side
    13,828.49x = 161,344,066.05
  5. Step 5: Solve for x
    x = 161,344,066.05/13,828.49
  6. Step 6: Final answer
    x = 11,667.51

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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.