Home / 28,714.81-43,075.46-13,128.25

Finding the Fourth Proportional to 28,714.81, 43,075.46 and 13,128.25

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Solution

The fourth proportional to 28,714.81, 43,075.46 and 13,128.25 is: 19,693.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,714.81 : 43,075.46 = 13,128.25 : x
  2. Step 2: Convert to fraction form
    28,714.81/43,075.46 = 13,128.25/x
  3. Step 3: Cross multiply
    28,714.81x = 43,075.46 × 13,128.25
  4. Step 4: Simplify right side
    28,714.81x = 565,505,407.75
  5. Step 5: Solve for x
    x = 565,505,407.75/28,714.81
  6. Step 6: Final answer
    x = 19,693.86

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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.