Home / 18,405.36-25,388.91-11,326.77

Finding the Fourth Proportional to 18,405.36, 25,388.91 and 11,326.77

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Solution

The fourth proportional to 18,405.36, 25,388.91 and 11,326.77 is: 15,624.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,405.36 : 25,388.91 = 11,326.77 : x
  2. Step 2: Convert to fraction form
    18,405.36/25,388.91 = 11,326.77/x
  3. Step 3: Cross multiply
    18,405.36x = 25,388.91 × 11,326.77
  4. Step 4: Simplify right side
    18,405.36x = 287,574,344.12
  5. Step 5: Solve for x
    x = 287,574,344.12/18,405.36
  6. Step 6: Final answer
    x = 15,624.49

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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.