Home / 12,709.89-19,060.78-11,880.67

Finding the Fourth Proportional to 12,709.89, 19,060.78 and 11,880.67

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Solution

The fourth proportional to 12,709.89, 19,060.78 and 11,880.67 is: 17,817.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,709.89 : 19,060.78 = 11,880.67 : x
  2. Step 2: Convert to fraction form
    12,709.89/19,060.78 = 11,880.67/x
  3. Step 3: Cross multiply
    12,709.89x = 19,060.78 × 11,880.67
  4. Step 4: Simplify right side
    12,709.89x = 226,454,837.12
  5. Step 5: Solve for x
    x = 226,454,837.12/12,709.89
  6. Step 6: Final answer
    x = 17,817.21

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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.