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Finding the Fourth Proportional to 11,015.94, 15,181.01 and 10,813.50

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Solution

The fourth proportional to 11,015.94, 15,181.01 and 10,813.50 is: 14,902.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,015.94 : 15,181.01 = 10,813.50 : x
  2. Step 2: Convert to fraction form
    11,015.94/15,181.01 = 10,813.50/x
  3. Step 3: Cross multiply
    11,015.94x = 15,181.01 × 10,813.50
  4. Step 4: Simplify right side
    11,015.94x = 164,159,851.64
  5. Step 5: Solve for x
    x = 164,159,851.64/11,015.94
  6. Step 6: Final answer
    x = 14,902.03

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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.