Home / 13,534.36-18,680.43-8,228.05

Finding the Fourth Proportional to 13,534.36, 18,680.43 and 8,228.05

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Solution

The fourth proportional to 13,534.36, 18,680.43 and 8,228.05 is: 11,356.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,534.36 : 18,680.43 = 8,228.05 : x
  2. Step 2: Convert to fraction form
    13,534.36/18,680.43 = 8,228.05/x
  3. Step 3: Cross multiply
    13,534.36x = 18,680.43 × 8,228.05
  4. Step 4: Simplify right side
    13,534.36x = 153,703,512.06
  5. Step 5: Solve for x
    x = 153,703,512.06/13,534.36
  6. Step 6: Final answer
    x = 11,356.54

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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.