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Finding the Fourth Proportional to 28,741.20, 43,111.72 and 9,019.84

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Solution

The fourth proportional to 28,741.20, 43,111.72 and 9,019.84 is: 13,529.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,741.20 : 43,111.72 = 9,019.84 : x
  2. Step 2: Convert to fraction form
    28,741.20/43,111.72 = 9,019.84/x
  3. Step 3: Cross multiply
    28,741.20x = 43,111.72 × 9,019.84
  4. Step 4: Simplify right side
    28,741.20x = 388,860,816.52
  5. Step 5: Solve for x
    x = 388,860,816.52/28,741.20
  6. Step 6: Final answer
    x = 13,529.73

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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.