Home / 28,059.58-42,089.41-18,717.85

Finding the Fourth Proportional to 28,059.58, 42,089.41 and 18,717.85

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Solution

The fourth proportional to 28,059.58, 42,089.41 and 18,717.85 is: 28,076.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,059.58 : 42,089.41 = 18,717.85 : x
  2. Step 2: Convert to fraction form
    28,059.58/42,089.41 = 18,717.85/x
  3. Step 3: Cross multiply
    28,059.58x = 42,089.41 × 18,717.85
  4. Step 4: Simplify right side
    28,059.58x = 787,823,233.69
  5. Step 5: Solve for x
    x = 787,823,233.69/28,059.58
  6. Step 6: Final answer
    x = 28,076.80

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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.