Home / 13,738.23-18,961.20-7,771.77

Finding the Fourth Proportional to 13,738.23, 18,961.20 and 7,771.77

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Solution

The fourth proportional to 13,738.23, 18,961.20 and 7,771.77 is: 10,726.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,738.23 : 18,961.20 = 7,771.77 : x
  2. Step 2: Convert to fraction form
    13,738.23/18,961.20 = 7,771.77/x
  3. Step 3: Cross multiply
    13,738.23x = 18,961.20 × 7,771.77
  4. Step 4: Simplify right side
    13,738.23x = 147,362,085.32
  5. Step 5: Solve for x
    x = 147,362,085.32/13,738.23
  6. Step 6: Final answer
    x = 10,726.42

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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.