Home / 10,890.57-16,328.84-4,654.65

Finding the Fourth Proportional to 10,890.57, 16,328.84 and 4,654.65

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Solution

The fourth proportional to 10,890.57, 16,328.84 and 4,654.65 is: 6,978.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,890.57 : 16,328.84 = 4,654.65 : x
  2. Step 2: Convert to fraction form
    10,890.57/16,328.84 = 4,654.65/x
  3. Step 3: Cross multiply
    10,890.57x = 16,328.84 × 4,654.65
  4. Step 4: Simplify right side
    10,890.57x = 76,005,011.83
  5. Step 5: Solve for x
    x = 76,005,011.83/10,890.57
  6. Step 6: Final answer
    x = 6,978.97

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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.