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Finding the Fourth Proportional to 12,615.47, 17,409.31 and 6,950.28

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Solution

The fourth proportional to 12,615.47, 17,409.31 and 6,950.28 is: 9,591.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,615.47 : 17,409.31 = 6,950.28 : x
  2. Step 2: Convert to fraction form
    12,615.47/17,409.31 = 6,950.28/x
  3. Step 3: Cross multiply
    12,615.47x = 17,409.31 × 6,950.28
  4. Step 4: Simplify right side
    12,615.47x = 120,999,579.11
  5. Step 5: Solve for x
    x = 120,999,579.11/12,615.47
  6. Step 6: Final answer
    x = 9,591.37

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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.