Home / 28,119.81-42,179.70-7,343.31

Finding the Fourth Proportional to 28,119.81, 42,179.70 and 7,343.31

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Solution

The fourth proportional to 28,119.81, 42,179.70 and 7,343.31 is: 11,014.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,119.81 : 42,179.70 = 7,343.31 : x
  2. Step 2: Convert to fraction form
    28,119.81/42,179.70 = 7,343.31/x
  3. Step 3: Cross multiply
    28,119.81x = 42,179.70 × 7,343.31
  4. Step 4: Simplify right side
    28,119.81x = 309,738,612.81
  5. Step 5: Solve for x
    x = 309,738,612.81/28,119.81
  6. Step 6: Final answer
    x = 11,014.96

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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.