Home / 13,395.71-18,485.74-7,427.36

Finding the Fourth Proportional to 13,395.71, 18,485.74 and 7,427.36

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Solution

The fourth proportional to 13,395.71, 18,485.74 and 7,427.36 is: 10,249.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,395.71 : 18,485.74 = 7,427.36 : x
  2. Step 2: Convert to fraction form
    13,395.71/18,485.74 = 7,427.36/x
  3. Step 3: Cross multiply
    13,395.71x = 18,485.74 × 7,427.36
  4. Step 4: Simplify right side
    13,395.71x = 137,300,245.85
  5. Step 5: Solve for x
    x = 137,300,245.85/13,395.71
  6. Step 6: Final answer
    x = 10,249.57

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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.