Home / 28,682.54-39,582.40-15,936.88

Finding the Fourth Proportional to 28,682.54, 39,582.40 and 15,936.88

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Solution

The fourth proportional to 28,682.54, 39,582.40 and 15,936.88 is: 21,993.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,682.54 : 39,582.40 = 15,936.88 : x
  2. Step 2: Convert to fraction form
    28,682.54/39,582.40 = 15,936.88/x
  3. Step 3: Cross multiply
    28,682.54x = 39,582.40 × 15,936.88
  4. Step 4: Simplify right side
    28,682.54x = 630,819,958.91
  5. Step 5: Solve for x
    x = 630,819,958.91/28,682.54
  6. Step 6: Final answer
    x = 21,993.17

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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.