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Finding the Fourth Proportional to 14,028.39, 20,978.60 and 10,473.03

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Solution

The fourth proportional to 14,028.39, 20,978.60 and 10,473.03 is: 15,661.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,028.39 : 20,978.60 = 10,473.03 : x
  2. Step 2: Convert to fraction form
    14,028.39/20,978.60 = 10,473.03/x
  3. Step 3: Cross multiply
    14,028.39x = 20,978.60 × 10,473.03
  4. Step 4: Simplify right side
    14,028.39x = 219,709,454.79
  5. Step 5: Solve for x
    x = 219,709,454.79/14,028.39
  6. Step 6: Final answer
    x = 15,661.77

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1.5x scale

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.