Home / 21,163.19-31,745.79-17,458.55

Finding the Fourth Proportional to 21,163.19, 31,745.79 and 17,458.55

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Solution

The fourth proportional to 21,163.19, 31,745.79 and 17,458.55 is: 26,188.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,163.19 : 31,745.79 = 17,458.55 : x
  2. Step 2: Convert to fraction form
    21,163.19/31,745.79 = 17,458.55/x
  3. Step 3: Cross multiply
    21,163.19x = 31,745.79 × 17,458.55
  4. Step 4: Simplify right side
    21,163.19x = 554,235,303.28
  5. Step 5: Solve for x
    x = 554,235,303.28/21,163.19
  6. Step 6: Final answer
    x = 26,188.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.