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Finding the Fourth Proportional to 12,956.76, 19,434.87 and 3,722.76

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Solution

The fourth proportional to 12,956.76, 19,434.87 and 3,722.76 is: 5,584.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,956.76 : 19,434.87 = 3,722.76 : x
  2. Step 2: Convert to fraction form
    12,956.76/19,434.87 = 3,722.76/x
  3. Step 3: Cross multiply
    12,956.76x = 19,434.87 × 3,722.76
  4. Step 4: Simplify right side
    12,956.76x = 72,351,356.64
  5. Step 5: Solve for x
    x = 72,351,356.64/12,956.76
  6. Step 6: Final answer
    x = 5,584.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.