Home / 12,084.81-18,128.03-3,319.67

Finding the Fourth Proportional to 12,084.81, 18,128.03 and 3,319.67

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Solution

The fourth proportional to 12,084.81, 18,128.03 and 3,319.67 is: 4,979.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,084.81 : 18,128.03 = 3,319.67 : x
  2. Step 2: Convert to fraction form
    12,084.81/18,128.03 = 3,319.67/x
  3. Step 3: Cross multiply
    12,084.81x = 18,128.03 × 3,319.67
  4. Step 4: Simplify right side
    12,084.81x = 60,178,970.11
  5. Step 5: Solve for x
    x = 60,178,970.11/12,084.81
  6. Step 6: Final answer
    x = 4,979.72

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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.