Home / 21,832.56-30,120.96-12,395.64

Finding the Fourth Proportional to 21,832.56, 30,120.96 and 12,395.64

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Solution

The fourth proportional to 21,832.56, 30,120.96 and 12,395.64 is: 17,101.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,832.56 : 30,120.96 = 12,395.64 : x
  2. Step 2: Convert to fraction form
    21,832.56/30,120.96 = 12,395.64/x
  3. Step 3: Cross multiply
    21,832.56x = 30,120.96 × 12,395.64
  4. Step 4: Simplify right side
    21,832.56x = 373,368,576.61
  5. Step 5: Solve for x
    x = 373,368,576.61/21,832.56
  6. Step 6: Final answer
    x = 17,101.46

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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.