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Finding the Fourth Proportional to 21,616.67, 29,804.15 and 18,036.88

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Solution

The fourth proportional to 21,616.67, 29,804.15 and 18,036.88 is: 24,868.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,616.67 : 29,804.15 = 18,036.88 : x
  2. Step 2: Convert to fraction form
    21,616.67/29,804.15 = 18,036.88/x
  3. Step 3: Cross multiply
    21,616.67x = 29,804.15 × 18,036.88
  4. Step 4: Simplify right side
    21,616.67x = 537,573,847.63
  5. Step 5: Solve for x
    x = 537,573,847.63/21,616.67
  6. Step 6: Final answer
    x = 24,868.48

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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.