Home / 20,889.35-31,333.95-5,094.20

Finding the Fourth Proportional to 20,889.35, 31,333.95 and 5,094.20

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Solution

The fourth proportional to 20,889.35, 31,333.95 and 5,094.20 is: 7,641.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,889.35 : 31,333.95 = 5,094.20 : x
  2. Step 2: Convert to fraction form
    20,889.35/31,333.95 = 5,094.20/x
  3. Step 3: Cross multiply
    20,889.35x = 31,333.95 × 5,094.20
  4. Step 4: Simplify right side
    20,889.35x = 159,621,408.09
  5. Step 5: Solve for x
    x = 159,621,408.09/20,889.35
  6. Step 6: Final answer
    x = 7,641.28

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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.