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Finding the Fourth Proportional to 12,605, 17,394.90 and 7,015.88

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Solution

The fourth proportional to 12,605, 17,394.90 and 7,015.88 is: 9,681.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,605 : 17,394.90 = 7,015.88 : x
  2. Step 2: Convert to fraction form
    12,605/17,394.90 = 7,015.88/x
  3. Step 3: Cross multiply
    12,605x = 17,394.90 × 7,015.88
  4. Step 4: Simplify right side
    12,605x = 122,040,531.01
  5. Step 5: Solve for x
    x = 122,040,531.01/12,605
  6. Step 6: Final answer
    x = 9,681.91

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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.