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Finding the Fourth Proportional to 12,859.29, 17,746.65 and 7,194.56

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Solution

The fourth proportional to 12,859.29, 17,746.65 and 7,194.56 is: 9,928.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,859.29 : 17,746.65 = 7,194.56 : x
  2. Step 2: Convert to fraction form
    12,859.29/17,746.65 = 7,194.56/x
  3. Step 3: Cross multiply
    12,859.29x = 17,746.65 × 7,194.56
  4. Step 4: Simplify right side
    12,859.29x = 127,679,249.49
  5. Step 5: Solve for x
    x = 127,679,249.49/12,859.29
  6. Step 6: Final answer
    x = 9,928.95

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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.