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Finding the Fourth Proportional to 9,888.35, 13,629.62 and 7,018.07

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Solution

The fourth proportional to 9,888.35, 13,629.62 and 7,018.07 is: 9,673.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,888.35 : 13,629.62 = 7,018.07 : x
  2. Step 2: Convert to fraction form
    9,888.35/13,629.62 = 7,018.07/x
  3. Step 3: Cross multiply
    9,888.35x = 13,629.62 × 7,018.07
  4. Step 4: Simplify right side
    9,888.35x = 95,653,576.63
  5. Step 5: Solve for x
    x = 95,653,576.63/9,888.35
  6. Step 6: Final answer
    x = 9,673.37

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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.