Home / 21,871.21-30,166.72-14,599.64

Finding the Fourth Proportional to 21,871.21, 30,166.72 and 14,599.64

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Solution

The fourth proportional to 21,871.21, 30,166.72 and 14,599.64 is: 20,137.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,871.21 : 30,166.72 = 14,599.64 : x
  2. Step 2: Convert to fraction form
    21,871.21/30,166.72 = 14,599.64/x
  3. Step 3: Cross multiply
    21,871.21x = 30,166.72 × 14,599.64
  4. Step 4: Simplify right side
    21,871.21x = 440,423,251.98
  5. Step 5: Solve for x
    x = 440,423,251.98/21,871.21
  6. Step 6: Final answer
    x = 20,137.12

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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.