Home / 28,990.06-43,455.38-12,339.38

Finding the Fourth Proportional to 28,990.06, 43,455.38 and 12,339.38

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Solution

The fourth proportional to 28,990.06, 43,455.38 and 12,339.38 is: 18,496.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,990.06 : 43,455.38 = 12,339.38 : x
  2. Step 2: Convert to fraction form
    28,990.06/43,455.38 = 12,339.38/x
  3. Step 3: Cross multiply
    28,990.06x = 43,455.38 × 12,339.38
  4. Step 4: Simplify right side
    28,990.06x = 536,212,446.86
  5. Step 5: Solve for x
    x = 536,212,446.86/28,990.06
  6. Step 6: Final answer
    x = 18,496.42

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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.