Home / 20,754.24-28,644.48-12,375.36

Finding the Fourth Proportional to 20,754.24, 28,644.48 and 12,375.36

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Solution

The fourth proportional to 20,754.24, 28,644.48 and 12,375.36 is: 17,080.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,754.24 : 28,644.48 = 12,375.36 : x
  2. Step 2: Convert to fraction form
    20,754.24/28,644.48 = 12,375.36/x
  3. Step 3: Cross multiply
    20,754.24x = 28,644.48 × 12,375.36
  4. Step 4: Simplify right side
    20,754.24x = 354,485,752.01
  5. Step 5: Solve for x
    x = 354,485,752.01/20,754.24
  6. Step 6: Final answer
    x = 17,080.16

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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.