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Finding the Fourth Proportional to 21,873.80, 30,203.04 and 17,611.32

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Solution

The fourth proportional to 21,873.80, 30,203.04 and 17,611.32 is: 24,317.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,873.80 : 30,203.04 = 17,611.32 : x
  2. Step 2: Convert to fraction form
    21,873.80/30,203.04 = 17,611.32/x
  3. Step 3: Cross multiply
    21,873.80x = 30,203.04 × 17,611.32
  4. Step 4: Simplify right side
    21,873.80x = 531,915,402.41
  5. Step 5: Solve for x
    x = 531,915,402.41/21,873.80
  6. Step 6: Final answer
    x = 24,317.47

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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.