Home / 28,076.91-42,137.37-19,588.21

Finding the Fourth Proportional to 28,076.91, 42,137.37 and 19,588.21

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Solution

The fourth proportional to 28,076.91, 42,137.37 and 19,588.21 is: 29,397.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,076.91 : 42,137.37 = 19,588.21 : x
  2. Step 2: Convert to fraction form
    28,076.91/42,137.37 = 19,588.21/x
  3. Step 3: Cross multiply
    28,076.91x = 42,137.37 × 19,588.21
  4. Step 4: Simplify right side
    28,076.91x = 825,395,652.41
  5. Step 5: Solve for x
    x = 825,395,652.41/28,076.91
  6. Step 6: Final answer
    x = 29,397.67

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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.