Home / 10,989.75-16,485.39-4,415.93

Finding the Fourth Proportional to 10,989.75, 16,485.39 and 4,415.93

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Solution

The fourth proportional to 10,989.75, 16,485.39 and 4,415.93 is: 6,624.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,989.75 : 16,485.39 = 4,415.93 : x
  2. Step 2: Convert to fraction form
    10,989.75/16,485.39 = 4,415.93/x
  3. Step 3: Cross multiply
    10,989.75x = 16,485.39 × 4,415.93
  4. Step 4: Simplify right side
    10,989.75x = 72,798,306.18
  5. Step 5: Solve for x
    x = 72,798,306.18/10,989.75
  6. Step 6: Final answer
    x = 6,624.20

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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.