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Finding the Fourth Proportional to 11,173.80, 16,779.90 and 10,828.20

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Solution

The fourth proportional to 11,173.80, 16,779.90 and 10,828.20 is: 16,260.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,173.80 : 16,779.90 = 10,828.20 : x
  2. Step 2: Convert to fraction form
    11,173.80/16,779.90 = 10,828.20/x
  3. Step 3: Cross multiply
    11,173.80x = 16,779.90 × 10,828.20
  4. Step 4: Simplify right side
    11,173.80x = 181,696,113.18
  5. Step 5: Solve for x
    x = 181,696,113.18/11,173.80
  6. Step 6: Final answer
    x = 16,260.91

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1.5x scale

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.