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Finding the Fourth Proportional to 11,164.78, 15,411 and 8,030.08

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Solution

The fourth proportional to 11,164.78, 15,411 and 8,030.08 is: 11,084.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,164.78 : 15,411 = 8,030.08 : x
  2. Step 2: Convert to fraction form
    11,164.78/15,411 = 8,030.08/x
  3. Step 3: Cross multiply
    11,164.78x = 15,411 × 8,030.08
  4. Step 4: Simplify right side
    11,164.78x = 123,751,562.88
  5. Step 5: Solve for x
    x = 123,751,562.88/11,164.78
  6. Step 6: Final answer
    x = 11,084.10

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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.