Home / 14,190.78-19,583.10-7,817.22

Finding the Fourth Proportional to 14,190.78, 19,583.10 and 7,817.22

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Solution

The fourth proportional to 14,190.78, 19,583.10 and 7,817.22 is: 10,787.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,190.78 : 19,583.10 = 7,817.22 : x
  2. Step 2: Convert to fraction form
    14,190.78/19,583.10 = 7,817.22/x
  3. Step 3: Cross multiply
    14,190.78x = 19,583.10 × 7,817.22
  4. Step 4: Simplify right side
    14,190.78x = 153,085,400.98
  5. Step 5: Solve for x
    x = 153,085,400.98/14,190.78
  6. Step 6: Final answer
    x = 10,787.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.