Home / 20,956.75-31,453.95-18,732.08

Finding the Fourth Proportional to 20,956.75, 31,453.95 and 18,732.08

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Solution

The fourth proportional to 20,956.75, 31,453.95 and 18,732.08 is: 28,114.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,956.75 : 31,453.95 = 18,732.08 : x
  2. Step 2: Convert to fraction form
    20,956.75/31,453.95 = 18,732.08/x
  3. Step 3: Cross multiply
    20,956.75x = 31,453.95 × 18,732.08
  4. Step 4: Simplify right side
    20,956.75x = 589,197,907.72
  5. Step 5: Solve for x
    x = 589,197,907.72/20,956.75
  6. Step 6: Final answer
    x = 28,114.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.