Home / 13,722.41-18,917.52-9,742.07

Finding the Fourth Proportional to 13,722.41, 18,917.52 and 9,742.07

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Solution

The fourth proportional to 13,722.41, 18,917.52 and 9,742.07 is: 13,430.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,722.41 : 18,917.52 = 9,742.07 : x
  2. Step 2: Convert to fraction form
    13,722.41/18,917.52 = 9,742.07/x
  3. Step 3: Cross multiply
    13,722.41x = 18,917.52 × 9,742.07
  4. Step 4: Simplify right side
    13,722.41x = 184,295,709.48
  5. Step 5: Solve for x
    x = 184,295,709.48/13,722.41
  6. Step 6: Final answer
    x = 13,430.28

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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.