Home / 13,739.08-18,939.26-10,749.72

Finding the Fourth Proportional to 13,739.08, 18,939.26 and 10,749.72

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Solution

The fourth proportional to 13,739.08, 18,939.26 and 10,749.72 is: 14,818.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,739.08 : 18,939.26 = 10,749.72 : x
  2. Step 2: Convert to fraction form
    13,739.08/18,939.26 = 10,749.72/x
  3. Step 3: Cross multiply
    13,739.08x = 18,939.26 × 10,749.72
  4. Step 4: Simplify right side
    13,739.08x = 203,591,688.26
  5. Step 5: Solve for x
    x = 203,591,688.26/13,739.08
  6. Step 6: Final answer
    x = 14,818.44

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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.