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Finding the Fourth Proportional to 12,708.90, 17,526.87 and 8,227.98

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Solution

The fourth proportional to 12,708.90, 17,526.87 and 8,227.98 is: 11,347.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,708.90 : 17,526.87 = 8,227.98 : x
  2. Step 2: Convert to fraction form
    12,708.90/17,526.87 = 8,227.98/x
  3. Step 3: Cross multiply
    12,708.90x = 17,526.87 × 8,227.98
  4. Step 4: Simplify right side
    12,708.90x = 144,210,735.82
  5. Step 5: Solve for x
    x = 144,210,735.82/12,708.90
  6. Step 6: Final answer
    x = 11,347.22

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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.