Home / 30,868.47-46,313.81-12,138.12

Finding the Fourth Proportional to 30,868.47, 46,313.81 and 12,138.12

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Solution

The fourth proportional to 30,868.47, 46,313.81 and 12,138.12 is: 18,211.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,868.47 : 46,313.81 = 12,138.12 : x
  2. Step 2: Convert to fraction form
    30,868.47/46,313.81 = 12,138.12/x
  3. Step 3: Cross multiply
    30,868.47x = 46,313.81 × 12,138.12
  4. Step 4: Simplify right side
    30,868.47x = 562,162,522.75
  5. Step 5: Solve for x
    x = 562,162,522.75/30,868.47
  6. Step 6: Final answer
    x = 18,211.54

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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.