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Finding the Fourth Proportional to 28,019.39, 38,669.07 and 16,085.03

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Solution

The fourth proportional to 28,019.39, 38,669.07 and 16,085.03 is: 22,198.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,019.39 : 38,669.07 = 16,085.03 : x
  2. Step 2: Convert to fraction form
    28,019.39/38,669.07 = 16,085.03/x
  3. Step 3: Cross multiply
    28,019.39x = 38,669.07 × 16,085.03
  4. Step 4: Simplify right side
    28,019.39x = 621,993,151.02
  5. Step 5: Solve for x
    x = 621,993,151.02/28,019.39
  6. Step 6: Final answer
    x = 22,198.67

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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.