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Finding the Fourth Proportional to 11,008.86, 15,181.86 and 7,235.29

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Solution

The fourth proportional to 11,008.86, 15,181.86 and 7,235.29 is: 9,977.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,008.86 : 15,181.86 = 7,235.29 : x
  2. Step 2: Convert to fraction form
    11,008.86/15,181.86 = 7,235.29/x
  3. Step 3: Cross multiply
    11,008.86x = 15,181.86 × 7,235.29
  4. Step 4: Simplify right side
    11,008.86x = 109,845,159.84
  5. Step 5: Solve for x
    x = 109,845,159.84/11,008.86
  6. Step 6: Final answer
    x = 9,977.89

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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.