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Finding the Fourth Proportional to 9,918.82, 13,670.93 and 9,451.69

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Solution

The fourth proportional to 9,918.82, 13,670.93 and 9,451.69 is: 13,027.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,918.82 : 13,670.93 = 9,451.69 : x
  2. Step 2: Convert to fraction form
    9,918.82/13,670.93 = 9,451.69/x
  3. Step 3: Cross multiply
    9,918.82x = 13,670.93 × 9,451.69
  4. Step 4: Simplify right side
    9,918.82x = 129,213,432.14
  5. Step 5: Solve for x
    x = 129,213,432.14/9,918.82
  6. Step 6: Final answer
    x = 13,027.09

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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.