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Finding the Fourth Proportional to 11,090.80, 16,644.30 and 7,810.30

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Solution

The fourth proportional to 11,090.80, 16,644.30 and 7,810.30 is: 11,721.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,090.80 : 16,644.30 = 7,810.30 : x
  2. Step 2: Convert to fraction form
    11,090.80/16,644.30 = 7,810.30/x
  3. Step 3: Cross multiply
    11,090.80x = 16,644.30 × 7,810.30
  4. Step 4: Simplify right side
    11,090.80x = 129,996,976.29
  5. Step 5: Solve for x
    x = 129,996,976.29/11,090.80
  6. Step 6: Final answer
    x = 11,721.15

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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.