Home / 13,730.20-18,945.98-9,749.86

Finding the Fourth Proportional to 13,730.20, 18,945.98 and 9,749.86

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Solution

The fourth proportional to 13,730.20, 18,945.98 and 9,749.86 is: 13,453.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,730.20 : 18,945.98 = 9,749.86 : x
  2. Step 2: Convert to fraction form
    13,730.20/18,945.98 = 9,749.86/x
  3. Step 3: Cross multiply
    13,730.20x = 18,945.98 × 9,749.86
  4. Step 4: Simplify right side
    13,730.20x = 184,720,652.56
  5. Step 5: Solve for x
    x = 184,720,652.56/13,730.20
  6. Step 6: Final answer
    x = 13,453.60

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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.