Home / 28,442.16-42,664.32-7,665.84

Finding the Fourth Proportional to 28,442.16, 42,664.32 and 7,665.84

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Solution

The fourth proportional to 28,442.16, 42,664.32 and 7,665.84 is: 11,499.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,442.16 : 42,664.32 = 7,665.84 : x
  2. Step 2: Convert to fraction form
    28,442.16/42,664.32 = 7,665.84/x
  3. Step 3: Cross multiply
    28,442.16x = 42,664.32 × 7,665.84
  4. Step 4: Simplify right side
    28,442.16x = 327,057,850.83
  5. Step 5: Solve for x
    x = 327,057,850.83/28,442.16
  6. Step 6: Final answer
    x = 11,499.05

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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.