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Finding the Fourth Proportional to 21,803.62, 30,031.68 and 16,758.19

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Solution

The fourth proportional to 21,803.62, 30,031.68 and 16,758.19 is: 23,082.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,803.62 : 30,031.68 = 16,758.19 : x
  2. Step 2: Convert to fraction form
    21,803.62/30,031.68 = 16,758.19/x
  3. Step 3: Cross multiply
    21,803.62x = 30,031.68 × 16,758.19
  4. Step 4: Simplify right side
    21,803.62x = 503,276,599.46
  5. Step 5: Solve for x
    x = 503,276,599.46/21,803.62
  6. Step 6: Final answer
    x = 23,082.25

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.