Home / 12,555.18-17,322.66-9,894.33

Finding the Fourth Proportional to 12,555.18, 17,322.66 and 9,894.33

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Solution

The fourth proportional to 12,555.18, 17,322.66 and 9,894.33 is: 13,651.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,555.18 : 17,322.66 = 9,894.33 : x
  2. Step 2: Convert to fraction form
    12,555.18/17,322.66 = 9,894.33/x
  3. Step 3: Cross multiply
    12,555.18x = 17,322.66 × 9,894.33
  4. Step 4: Simplify right side
    12,555.18x = 171,396,114.52
  5. Step 5: Solve for x
    x = 171,396,114.52/12,555.18
  6. Step 6: Final answer
    x = 13,651.43

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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.