Home / 13,395.88-18,485.01-7,427.43

Finding the Fourth Proportional to 13,395.88, 18,485.01 and 7,427.43

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Solution

The fourth proportional to 13,395.88, 18,485.01 and 7,427.43 is: 10,249.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,395.88 : 18,485.01 = 7,427.43 : x
  2. Step 2: Convert to fraction form
    13,395.88/18,485.01 = 7,427.43/x
  3. Step 3: Cross multiply
    13,395.88x = 18,485.01 × 7,427.43
  4. Step 4: Simplify right side
    13,395.88x = 137,296,117.82
  5. Step 5: Solve for x
    x = 137,296,117.82/13,395.88
  6. Step 6: Final answer
    x = 10,249.13

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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.