Home / 21,546.40-32,391.60-18,695.20

Finding the Fourth Proportional to 21,546.40, 32,391.60 and 18,695.20

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Solution

The fourth proportional to 21,546.40, 32,391.60 and 18,695.20 is: 28,105.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,546.40 : 32,391.60 = 18,695.20 : x
  2. Step 2: Convert to fraction form
    21,546.40/32,391.60 = 18,695.20/x
  3. Step 3: Cross multiply
    21,546.40x = 32,391.60 × 18,695.20
  4. Step 4: Simplify right side
    21,546.40x = 605,567,440.32
  5. Step 5: Solve for x
    x = 605,567,440.32/21,546.40
  6. Step 6: Final answer
    x = 28,105.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.