Home / 13,395.42-18,486.61-7,427.64

Finding the Fourth Proportional to 13,395.42, 18,486.61 and 7,427.64

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Solution

The fourth proportional to 13,395.42, 18,486.61 and 7,427.64 is: 10,250.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,395.42 : 18,486.61 = 7,427.64 : x
  2. Step 2: Convert to fraction form
    13,395.42/18,486.61 = 7,427.64/x
  3. Step 3: Cross multiply
    13,395.42x = 18,486.61 × 7,427.64
  4. Step 4: Simplify right side
    13,395.42x = 137,311,883.90
  5. Step 5: Solve for x
    x = 137,311,883.90/13,395.42
  6. Step 6: Final answer
    x = 10,250.66

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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.