Home / 13,138.24-18,137.46-10,147.36

Finding the Fourth Proportional to 13,138.24, 18,137.46 and 10,147.36

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Solution

The fourth proportional to 13,138.24, 18,137.46 and 10,147.36 is: 14,008.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,138.24 : 18,137.46 = 10,147.36 : x
  2. Step 2: Convert to fraction form
    13,138.24/18,137.46 = 10,147.36/x
  3. Step 3: Cross multiply
    13,138.24x = 18,137.46 × 10,147.36
  4. Step 4: Simplify right side
    13,138.24x = 184,047,336.11
  5. Step 5: Solve for x
    x = 184,047,336.11/13,138.24
  6. Step 6: Final answer
    x = 14,008.52

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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.