Home / 13,728.56-18,947.43-8,693.24

Finding the Fourth Proportional to 13,728.56, 18,947.43 and 8,693.24

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Solution

The fourth proportional to 13,728.56, 18,947.43 and 8,693.24 is: 11,997.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,728.56 : 18,947.43 = 8,693.24 : x
  2. Step 2: Convert to fraction form
    13,728.56/18,947.43 = 8,693.24/x
  3. Step 3: Cross multiply
    13,728.56x = 18,947.43 × 8,693.24
  4. Step 4: Simplify right side
    13,728.56x = 164,714,461.64
  5. Step 5: Solve for x
    x = 164,714,461.64/13,728.56
  6. Step 6: Final answer
    x = 11,997.95

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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.