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Finding the Fourth Proportional to 21,597.78, 29,769.09 and 17,113.62

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Solution

The fourth proportional to 21,597.78, 29,769.09 and 17,113.62 is: 23,588.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,597.78 : 29,769.09 = 17,113.62 : x
  2. Step 2: Convert to fraction form
    21,597.78/29,769.09 = 17,113.62/x
  3. Step 3: Cross multiply
    21,597.78x = 29,769.09 × 17,113.62
  4. Step 4: Simplify right side
    21,597.78x = 509,456,894.01
  5. Step 5: Solve for x
    x = 509,456,894.01/21,597.78
  6. Step 6: Final answer
    x = 23,588.39

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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.