Home / 28,075.58-38,712.83-19,128.32

Finding the Fourth Proportional to 28,075.58, 38,712.83 and 19,128.32

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Solution

The fourth proportional to 28,075.58, 38,712.83 and 19,128.32 is: 26,375.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,075.58 : 38,712.83 = 19,128.32 : x
  2. Step 2: Convert to fraction form
    28,075.58/38,712.83 = 19,128.32/x
  3. Step 3: Cross multiply
    28,075.58x = 38,712.83 × 19,128.32
  4. Step 4: Simplify right side
    28,075.58x = 740,511,111.14
  5. Step 5: Solve for x
    x = 740,511,111.14/28,075.58
  6. Step 6: Final answer
    x = 26,375.63

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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.