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Finding the Fourth Proportional to 12,956.04, 17,879.40 and 7,367.04

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Solution

The fourth proportional to 12,956.04, 17,879.40 and 7,367.04 is: 10,166.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,956.04 : 17,879.40 = 7,367.04 : x
  2. Step 2: Convert to fraction form
    12,956.04/17,879.40 = 7,367.04/x
  3. Step 3: Cross multiply
    12,956.04x = 17,879.40 × 7,367.04
  4. Step 4: Simplify right side
    12,956.04x = 131,718,254.98
  5. Step 5: Solve for x
    x = 131,718,254.98/12,956.04
  6. Step 6: Final answer
    x = 10,166.55

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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.