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Finding the Fourth Proportional to 15,843.69, 21,862.79 and 9,469.01

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Solution

The fourth proportional to 15,843.69, 21,862.79 and 9,469.01 is: 13,066.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,843.69 : 21,862.79 = 9,469.01 : x
  2. Step 2: Convert to fraction form
    15,843.69/21,862.79 = 9,469.01/x
  3. Step 3: Cross multiply
    15,843.69x = 21,862.79 × 9,469.01
  4. Step 4: Simplify right side
    15,843.69x = 207,018,977.14
  5. Step 5: Solve for x
    x = 207,018,977.14/15,843.69
  6. Step 6: Final answer
    x = 13,066.34

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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.