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Finding the Fourth Proportional to 11,090.58, 15,310.02 and 7,315.98

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Solution

The fourth proportional to 11,090.58, 15,310.02 and 7,315.98 is: 10,099.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,090.58 : 15,310.02 = 7,315.98 : x
  2. Step 2: Convert to fraction form
    11,090.58/15,310.02 = 7,315.98/x
  3. Step 3: Cross multiply
    11,090.58x = 15,310.02 × 7,315.98
  4. Step 4: Simplify right side
    11,090.58x = 112,007,800.12
  5. Step 5: Solve for x
    x = 112,007,800.12/11,090.58
  6. Step 6: Final answer
    x = 10,099.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.