Home / 30,678.43-46,018.67-8,489.95

Finding the Fourth Proportional to 30,678.43, 46,018.67 and 8,489.95

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Solution

The fourth proportional to 30,678.43, 46,018.67 and 8,489.95 is: 12,735.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,678.43 : 46,018.67 = 8,489.95 : x
  2. Step 2: Convert to fraction form
    30,678.43/46,018.67 = 8,489.95/x
  3. Step 3: Cross multiply
    30,678.43x = 46,018.67 × 8,489.95
  4. Step 4: Simplify right side
    30,678.43x = 390,696,207.37
  5. Step 5: Solve for x
    x = 390,696,207.37/30,678.43
  6. Step 6: Final answer
    x = 12,735.21

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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.