Home / 23,168.36-31,990.74-21,399.32

Finding the Fourth Proportional to 23,168.36, 31,990.74 and 21,399.32

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Solution

The fourth proportional to 23,168.36, 31,990.74 and 21,399.32 is: 29,548.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,168.36 : 31,990.74 = 21,399.32 : x
  2. Step 2: Convert to fraction form
    23,168.36/31,990.74 = 21,399.32/x
  3. Step 3: Cross multiply
    23,168.36x = 31,990.74 × 21,399.32
  4. Step 4: Simplify right side
    23,168.36x = 684,580,082.30
  5. Step 5: Solve for x
    x = 684,580,082.30/23,168.36
  6. Step 6: Final answer
    x = 29,548.06

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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.