Home / 13,395.54-18,485.76-7,427.21

Finding the Fourth Proportional to 13,395.54, 18,485.76 and 7,427.21

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Solution

The fourth proportional to 13,395.54, 18,485.76 and 7,427.21 is: 10,249.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,395.54 : 18,485.76 = 7,427.21 : x
  2. Step 2: Convert to fraction form
    13,395.54/18,485.76 = 7,427.21/x
  3. Step 3: Cross multiply
    13,395.54x = 18,485.76 × 7,427.21
  4. Step 4: Simplify right side
    13,395.54x = 137,297,621.53
  5. Step 5: Solve for x
    x = 137,297,621.53/13,395.54
  6. Step 6: Final answer
    x = 10,249.50

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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.