Home / 18,381.36-25,355.79-11,302.77

Finding the Fourth Proportional to 18,381.36, 25,355.79 and 11,302.77

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Solution

The fourth proportional to 18,381.36, 25,355.79 and 11,302.77 is: 15,591.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,381.36 : 25,355.79 = 11,302.77 : x
  2. Step 2: Convert to fraction form
    18,381.36/25,355.79 = 11,302.77/x
  3. Step 3: Cross multiply
    18,381.36x = 25,355.79 × 11,302.77
  4. Step 4: Simplify right side
    18,381.36x = 286,590,662.54
  5. Step 5: Solve for x
    x = 286,590,662.54/18,381.36
  6. Step 6: Final answer
    x = 15,591.37

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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.