Home / 13,910.99-19,186.70-9,662.05

Finding the Fourth Proportional to 13,910.99, 19,186.70 and 9,662.05

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Solution

The fourth proportional to 13,910.99, 19,186.70 and 9,662.05 is: 13,326.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,910.99 : 19,186.70 = 9,662.05 : x
  2. Step 2: Convert to fraction form
    13,910.99/19,186.70 = 9,662.05/x
  3. Step 3: Cross multiply
    13,910.99x = 19,186.70 × 9,662.05
  4. Step 4: Simplify right side
    13,910.99x = 185,382,830.41
  5. Step 5: Solve for x
    x = 185,382,830.41/13,910.99
  6. Step 6: Final answer
    x = 13,326.36

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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.