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Finding the Fourth Proportional to 21,963.52, 30,323.51 and 16,918.26

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Solution

The fourth proportional to 21,963.52, 30,323.51 and 16,918.26 is: 23,357.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,963.52 : 30,323.51 = 16,918.26 : x
  2. Step 2: Convert to fraction form
    21,963.52/30,323.51 = 16,918.26/x
  3. Step 3: Cross multiply
    21,963.52x = 30,323.51 × 16,918.26
  4. Step 4: Simplify right side
    21,963.52x = 513,021,026.29
  5. Step 5: Solve for x
    x = 513,021,026.29/21,963.52
  6. Step 6: Final answer
    x = 23,357.87

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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.