Home / 19,028.70-28,499.85-9,783.90

Finding the Fourth Proportional to 19,028.70, 28,499.85 and 9,783.90

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Solution

The fourth proportional to 19,028.70, 28,499.85 and 9,783.90 is: 14,653.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,028.70 : 28,499.85 = 9,783.90 : x
  2. Step 2: Convert to fraction form
    19,028.70/28,499.85 = 9,783.90/x
  3. Step 3: Cross multiply
    19,028.70x = 28,499.85 × 9,783.90
  4. Step 4: Simplify right side
    19,028.70x = 278,839,682.42
  5. Step 5: Solve for x
    x = 278,839,682.42/19,028.70
  6. Step 6: Final answer
    x = 14,653.64

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1.5x scale

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.