Home / 13,554.36-18,699.99-8,447.55

Finding the Fourth Proportional to 13,554.36, 18,699.99 and 8,447.55

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Solution

The fourth proportional to 13,554.36, 18,699.99 and 8,447.55 is: 11,654.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,554.36 : 18,699.99 = 8,447.55 : x
  2. Step 2: Convert to fraction form
    13,554.36/18,699.99 = 8,447.55/x
  3. Step 3: Cross multiply
    13,554.36x = 18,699.99 × 8,447.55
  4. Step 4: Simplify right side
    13,554.36x = 157,969,100.52
  5. Step 5: Solve for x
    x = 157,969,100.52/13,554.36
  6. Step 6: Final answer
    x = 11,654.49

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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.