Home / 25,850.77-38,703.12-21,078.64

Finding the Fourth Proportional to 25,850.77, 38,703.12 and 21,078.64

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Solution

The fourth proportional to 25,850.77, 38,703.12 and 21,078.64 is: 31,558.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,850.77 : 38,703.12 = 21,078.64 : x
  2. Step 2: Convert to fraction form
    25,850.77/38,703.12 = 21,078.64/x
  3. Step 3: Cross multiply
    25,850.77x = 38,703.12 × 21,078.64
  4. Step 4: Simplify right side
    25,850.77x = 815,809,133.36
  5. Step 5: Solve for x
    x = 815,809,133.36/25,850.77
  6. Step 6: Final answer
    x = 31,558.41

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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.