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Finding the Fourth Proportional to 21,149.73, 31,726.73 and 7,826.24

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Solution

The fourth proportional to 21,149.73, 31,726.73 and 7,826.24 is: 11,740.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,149.73 : 31,726.73 = 7,826.24 : x
  2. Step 2: Convert to fraction form
    21,149.73/31,726.73 = 7,826.24/x
  3. Step 3: Cross multiply
    21,149.73x = 31,726.73 × 7,826.24
  4. Step 4: Simplify right side
    21,149.73x = 248,300,805.63
  5. Step 5: Solve for x
    x = 248,300,805.63/21,149.73
  6. Step 6: Final answer
    x = 11,740.14

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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.