Home / 38,643.36-57,954.34-13,680.12

Finding the Fourth Proportional to 38,643.36, 57,954.34 and 13,680.12

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Solution

The fourth proportional to 38,643.36, 57,954.34 and 13,680.12 is: 20,516.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,643.36 : 57,954.34 = 13,680.12 : x
  2. Step 2: Convert to fraction form
    38,643.36/57,954.34 = 13,680.12/x
  3. Step 3: Cross multiply
    38,643.36x = 57,954.34 × 13,680.12
  4. Step 4: Simplify right side
    38,643.36x = 792,822,325.72
  5. Step 5: Solve for x
    x = 792,822,325.72/38,643.36
  6. Step 6: Final answer
    x = 20,516.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.