Home / 28,682.58-39,579.62-15,936.15

Finding the Fourth Proportional to 28,682.58, 39,579.62 and 15,936.15

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Solution

The fourth proportional to 28,682.58, 39,579.62 and 15,936.15 is: 21,990.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,682.58 : 39,579.62 = 15,936.15 : x
  2. Step 2: Convert to fraction form
    28,682.58/39,579.62 = 15,936.15/x
  3. Step 3: Cross multiply
    28,682.58x = 39,579.62 × 15,936.15
  4. Step 4: Simplify right side
    28,682.58x = 630,746,681.58
  5. Step 5: Solve for x
    x = 630,746,681.58/28,682.58
  6. Step 6: Final answer
    x = 21,990.58

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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.