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Finding the Fourth Proportional to 12,610.89, 17,403.08 and 7,021.89

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Solution

The fourth proportional to 12,610.89, 17,403.08 and 7,021.89 is: 9,690.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,610.89 : 17,403.08 = 7,021.89 : x
  2. Step 2: Convert to fraction form
    12,610.89/17,403.08 = 7,021.89/x
  3. Step 3: Cross multiply
    12,610.89x = 17,403.08 × 7,021.89
  4. Step 4: Simplify right side
    12,610.89x = 122,202,478.31
  5. Step 5: Solve for x
    x = 122,202,478.31/12,610.89
  6. Step 6: Final answer
    x = 9,690.23

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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.