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Finding the Fourth Proportional to 12,868.92, 17,759.48 and 7,203.48

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Solution

The fourth proportional to 12,868.92, 17,759.48 and 7,203.48 is: 9,941.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,868.92 : 17,759.48 = 7,203.48 : x
  2. Step 2: Convert to fraction form
    12,868.92/17,759.48 = 7,203.48/x
  3. Step 3: Cross multiply
    12,868.92x = 17,759.48 × 7,203.48
  4. Step 4: Simplify right side
    12,868.92x = 127,930,058.99
  5. Step 5: Solve for x
    x = 127,930,058.99/12,868.92
  6. Step 6: Final answer
    x = 9,941.01

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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.