Home / 10,980.40-16,470.60-2,772.40

Finding the Fourth Proportional to 10,980.40, 16,470.60 and 2,772.40

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Solution

The fourth proportional to 10,980.40, 16,470.60 and 2,772.40 is: 4,158.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,980.40 : 16,470.60 = 2,772.40 : x
  2. Step 2: Convert to fraction form
    10,980.40/16,470.60 = 2,772.40/x
  3. Step 3: Cross multiply
    10,980.40x = 16,470.60 × 2,772.40
  4. Step 4: Simplify right side
    10,980.40x = 45,663,091.44
  5. Step 5: Solve for x
    x = 45,663,091.44/10,980.40
  6. Step 6: Final answer
    x = 4,158.60

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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.