Home / 9,989.30-14,983.96-3,415.54

Finding the Fourth Proportional to 9,989.30, 14,983.96 and 3,415.54

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Solution

The fourth proportional to 9,989.30, 14,983.96 and 3,415.54 is: 5,123.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,989.30 : 14,983.96 = 3,415.54 : x
  2. Step 2: Convert to fraction form
    9,989.30/14,983.96 = 3,415.54/x
  3. Step 3: Cross multiply
    9,989.30x = 14,983.96 × 3,415.54
  4. Step 4: Simplify right side
    9,989.30x = 51,178,314.74
  5. Step 5: Solve for x
    x = 51,178,314.74/9,989.30
  6. Step 6: Final answer
    x = 5,123.31

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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.