Home / 13,395.90-18,486.04-7,427.51

Finding the Fourth Proportional to 13,395.90, 18,486.04 and 7,427.51

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Solution

The fourth proportional to 13,395.90, 18,486.04 and 7,427.51 is: 10,249.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,395.90 : 18,486.04 = 7,427.51 : x
  2. Step 2: Convert to fraction form
    13,395.90/18,486.04 = 7,427.51/x
  3. Step 3: Cross multiply
    13,395.90x = 18,486.04 × 7,427.51
  4. Step 4: Simplify right side
    13,395.90x = 137,305,246.96
  5. Step 5: Solve for x
    x = 137,305,246.96/13,395.90
  6. Step 6: Final answer
    x = 10,249.80

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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.