Home / 10,980.20-16,458.48-4,743.14

Finding the Fourth Proportional to 10,980.20, 16,458.48 and 4,743.14

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Solution

The fourth proportional to 10,980.20, 16,458.48 and 4,743.14 is: 7,109.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,980.20 : 16,458.48 = 4,743.14 : x
  2. Step 2: Convert to fraction form
    10,980.20/16,458.48 = 4,743.14/x
  3. Step 3: Cross multiply
    10,980.20x = 16,458.48 × 4,743.14
  4. Step 4: Simplify right side
    10,980.20x = 78,064,874.83
  5. Step 5: Solve for x
    x = 78,064,874.83/10,980.20
  6. Step 6: Final answer
    x = 7,109.60

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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.