Home / 30,678.75-46,015.65-8,492.54

Finding the Fourth Proportional to 30,678.75, 46,015.65 and 8,492.54

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Solution

The fourth proportional to 30,678.75, 46,015.65 and 8,492.54 is: 12,738.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,678.75 : 46,015.65 = 8,492.54 : x
  2. Step 2: Convert to fraction form
    30,678.75/46,015.65 = 8,492.54/x
  3. Step 3: Cross multiply
    30,678.75x = 46,015.65 × 8,492.54
  4. Step 4: Simplify right side
    30,678.75x = 390,789,518.17
  5. Step 5: Solve for x
    x = 390,789,518.17/30,678.75
  6. Step 6: Final answer
    x = 12,738.12

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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.