Home / 12,738.92-17,588.26-9,749.40

Finding the Fourth Proportional to 12,738.92, 17,588.26 and 9,749.40

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Solution

The fourth proportional to 12,738.92, 17,588.26 and 9,749.40 is: 13,460.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,738.92 : 17,588.26 = 9,749.40 : x
  2. Step 2: Convert to fraction form
    12,738.92/17,588.26 = 9,749.40/x
  3. Step 3: Cross multiply
    12,738.92x = 17,588.26 × 9,749.40
  4. Step 4: Simplify right side
    12,738.92x = 171,474,982.04
  5. Step 5: Solve for x
    x = 171,474,982.04/12,738.92
  6. Step 6: Final answer
    x = 13,460.72

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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.