Home / 28,679.33-39,576.04-15,933.32

Finding the Fourth Proportional to 28,679.33, 39,576.04 and 15,933.32

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Solution

The fourth proportional to 28,679.33, 39,576.04 and 15,933.32 is: 21,987.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,679.33 : 39,576.04 = 15,933.32 : x
  2. Step 2: Convert to fraction form
    28,679.33/39,576.04 = 15,933.32/x
  3. Step 3: Cross multiply
    28,679.33x = 39,576.04 × 15,933.32
  4. Step 4: Simplify right side
    28,679.33x = 630,577,709.65
  5. Step 5: Solve for x
    x = 630,577,709.65/28,679.33
  6. Step 6: Final answer
    x = 21,987.18

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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.