Home / 11,278.12-15,562.73-7,636.75

Finding the Fourth Proportional to 11,278.12, 15,562.73 and 7,636.75

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Solution

The fourth proportional to 11,278.12, 15,562.73 and 7,636.75 is: 10,537.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,278.12 : 15,562.73 = 7,636.75 : x
  2. Step 2: Convert to fraction form
    11,278.12/15,562.73 = 7,636.75/x
  3. Step 3: Cross multiply
    11,278.12x = 15,562.73 × 7,636.75
  4. Step 4: Simplify right side
    11,278.12x = 118,848,697.42
  5. Step 5: Solve for x
    x = 118,848,697.42/11,278.12
  6. Step 6: Final answer
    x = 10,537.99

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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.