Home / 39,768.64-54,880.74-21,863.50

Finding the Fourth Proportional to 39,768.64, 54,880.74 and 21,863.50

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Solution

The fourth proportional to 39,768.64, 54,880.74 and 21,863.50 is: 30,171.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,768.64 : 54,880.74 = 21,863.50 : x
  2. Step 2: Convert to fraction form
    39,768.64/54,880.74 = 21,863.50/x
  3. Step 3: Cross multiply
    39,768.64x = 54,880.74 × 21,863.50
  4. Step 4: Simplify right side
    39,768.64x = 1,199,885,058.99
  5. Step 5: Solve for x
    x = 1,199,885,058.99/39,768.64
  6. Step 6: Final answer
    x = 30,171.64

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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.