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Finding the Fourth Proportional to 12,860.94, 17,748.09 and 7,271.94

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Solution

The fourth proportional to 12,860.94, 17,748.09 and 7,271.94 is: 10,035.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,860.94 : 17,748.09 = 7,271.94 : x
  2. Step 2: Convert to fraction form
    12,860.94/17,748.09 = 7,271.94/x
  3. Step 3: Cross multiply
    12,860.94x = 17,748.09 × 7,271.94
  4. Step 4: Simplify right side
    12,860.94x = 129,063,045.59
  5. Step 5: Solve for x
    x = 129,063,045.59/12,860.94
  6. Step 6: Final answer
    x = 10,035.27

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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.