Home / 28,362.12-42,541.62-8,639.02

Finding the Fourth Proportional to 28,362.12, 42,541.62 and 8,639.02

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Solution

The fourth proportional to 28,362.12, 42,541.62 and 8,639.02 is: 12,958.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,362.12 : 42,541.62 = 8,639.02 : x
  2. Step 2: Convert to fraction form
    28,362.12/42,541.62 = 8,639.02/x
  3. Step 3: Cross multiply
    28,362.12x = 42,541.62 × 8,639.02
  4. Step 4: Simplify right side
    28,362.12x = 367,517,906.01
  5. Step 5: Solve for x
    x = 367,517,906.01/28,362.12
  6. Step 6: Final answer
    x = 12,958.05

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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.