Home / 13,395.08-18,485.64-7,427.30

Finding the Fourth Proportional to 13,395.08, 18,485.64 and 7,427.30

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Solution

The fourth proportional to 13,395.08, 18,485.64 and 7,427.30 is: 10,249.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,395.08 : 18,485.64 = 7,427.30 : x
  2. Step 2: Convert to fraction form
    13,395.08/18,485.64 = 7,427.30/x
  3. Step 3: Cross multiply
    13,395.08x = 18,485.64 × 7,427.30
  4. Step 4: Simplify right side
    13,395.08x = 137,298,393.97
  5. Step 5: Solve for x
    x = 137,298,393.97/13,395.08
  6. Step 6: Final answer
    x = 10,249.92

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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.