Home / 10,980.90-16,472.51-3,189.72

Finding the Fourth Proportional to 10,980.90, 16,472.51 and 3,189.72

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Solution

The fourth proportional to 10,980.90, 16,472.51 and 3,189.72 is: 4,784.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,980.90 : 16,472.51 = 3,189.72 : x
  2. Step 2: Convert to fraction form
    10,980.90/16,472.51 = 3,189.72/x
  3. Step 3: Cross multiply
    10,980.90x = 16,472.51 × 3,189.72
  4. Step 4: Simplify right side
    10,980.90x = 52,542,678.65
  5. Step 5: Solve for x
    x = 52,542,678.65/10,980.90
  6. Step 6: Final answer
    x = 4,784.92

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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.