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Finding the Fourth Proportional to 15,745.63, 21,726.21 and 9,458.14

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Solution

The fourth proportional to 15,745.63, 21,726.21 and 9,458.14 is: 13,050.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,745.63 : 21,726.21 = 9,458.14 : x
  2. Step 2: Convert to fraction form
    15,745.63/21,726.21 = 9,458.14/x
  3. Step 3: Cross multiply
    15,745.63x = 21,726.21 × 9,458.14
  4. Step 4: Simplify right side
    15,745.63x = 205,489,535.85
  5. Step 5: Solve for x
    x = 205,489,535.85/15,745.63
  6. Step 6: Final answer
    x = 13,050.58

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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.