Home / 28,138.56-42,204.96-7,359.36

Finding the Fourth Proportional to 28,138.56, 42,204.96 and 7,359.36

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Solution

The fourth proportional to 28,138.56, 42,204.96 and 7,359.36 is: 11,038.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,138.56 : 42,204.96 = 7,359.36 : x
  2. Step 2: Convert to fraction form
    28,138.56/42,204.96 = 7,359.36/x
  3. Step 3: Cross multiply
    28,138.56x = 42,204.96 × 7,359.36
  4. Step 4: Simplify right side
    28,138.56x = 310,601,494.43
  5. Step 5: Solve for x
    x = 310,601,494.43/28,138.56
  6. Step 6: Final answer
    x = 11,038.29

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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.