Home / 28,197.21-42,356.85-18,331.41

Finding the Fourth Proportional to 28,197.21, 42,356.85 and 18,331.41

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Solution

The fourth proportional to 28,197.21, 42,356.85 and 18,331.41 is: 27,536.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,197.21 : 42,356.85 = 18,331.41 : x
  2. Step 2: Convert to fraction form
    28,197.21/42,356.85 = 18,331.41/x
  3. Step 3: Cross multiply
    28,197.21x = 42,356.85 × 18,331.41
  4. Step 4: Simplify right side
    28,197.21x = 776,460,783.66
  5. Step 5: Solve for x
    x = 776,460,783.66/28,197.21
  6. Step 6: Final answer
    x = 27,536.79

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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.