Home / 13,890.80-19,178.26-12,396.14

Finding the Fourth Proportional to 13,890.80, 19,178.26 and 12,396.14

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Solution

The fourth proportional to 13,890.80, 19,178.26 and 12,396.14 is: 17,114.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,890.80 : 19,178.26 = 12,396.14 : x
  2. Step 2: Convert to fraction form
    13,890.80/19,178.26 = 12,396.14/x
  3. Step 3: Cross multiply
    13,890.80x = 19,178.26 × 12,396.14
  4. Step 4: Simplify right side
    13,890.80x = 237,736,395.92
  5. Step 5: Solve for x
    x = 237,736,395.92/13,890.80
  6. Step 6: Final answer
    x = 17,114.67

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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.