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Finding the Fourth Proportional to 12,638.88, 17,441.54 and 6,973.68

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Solution

The fourth proportional to 12,638.88, 17,441.54 and 6,973.68 is: 9,623.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,638.88 : 17,441.54 = 6,973.68 : x
  2. Step 2: Convert to fraction form
    12,638.88/17,441.54 = 6,973.68/x
  3. Step 3: Cross multiply
    12,638.88x = 17,441.54 × 6,973.68
  4. Step 4: Simplify right side
    12,638.88x = 121,631,775.36
  5. Step 5: Solve for x
    x = 121,631,775.36/12,638.88
  6. Step 6: Final answer
    x = 9,623.62

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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.