Home / 13,138.94-18,132.17-7,170.93

Finding the Fourth Proportional to 13,138.94, 18,132.17 and 7,170.93

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Solution

The fourth proportional to 13,138.94, 18,132.17 and 7,170.93 is: 9,896.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,138.94 : 18,132.17 = 7,170.93 : x
  2. Step 2: Convert to fraction form
    13,138.94/18,132.17 = 7,170.93/x
  3. Step 3: Cross multiply
    13,138.94x = 18,132.17 × 7,170.93
  4. Step 4: Simplify right side
    13,138.94x = 130,024,485.96
  5. Step 5: Solve for x
    x = 130,024,485.96/13,138.94
  6. Step 6: Final answer
    x = 9,896.12

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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.