Home / 28,942.05-43,415.10-12,300.20

Finding the Fourth Proportional to 28,942.05, 43,415.10 and 12,300.20

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Solution

The fourth proportional to 28,942.05, 43,415.10 and 12,300.20 is: 18,451.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,942.05 : 43,415.10 = 12,300.20 : x
  2. Step 2: Convert to fraction form
    28,942.05/43,415.10 = 12,300.20/x
  3. Step 3: Cross multiply
    28,942.05x = 43,415.10 × 12,300.20
  4. Step 4: Simplify right side
    28,942.05x = 534,014,195.94
  5. Step 5: Solve for x
    x = 534,014,195.94/28,942.05
  6. Step 6: Final answer
    x = 18,451.15

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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.