Home / 13,868.58-19,131.39-9,393.90

Finding the Fourth Proportional to 13,868.58, 19,131.39 and 9,393.90

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Solution

The fourth proportional to 13,868.58, 19,131.39 and 9,393.90 is: 12,958.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,868.58 : 19,131.39 = 9,393.90 : x
  2. Step 2: Convert to fraction form
    13,868.58/19,131.39 = 9,393.90/x
  3. Step 3: Cross multiply
    13,868.58x = 19,131.39 × 9,393.90
  4. Step 4: Simplify right side
    13,868.58x = 179,718,364.52
  5. Step 5: Solve for x
    x = 179,718,364.52/13,868.58
  6. Step 6: Final answer
    x = 12,958.67

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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.