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Finding the Fourth Proportional to 14,321.68, 19,759.44 and 8,271.14

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Solution

The fourth proportional to 14,321.68, 19,759.44 and 8,271.14 is: 11,411.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,321.68 : 19,759.44 = 8,271.14 : x
  2. Step 2: Convert to fraction form
    14,321.68/19,759.44 = 8,271.14/x
  3. Step 3: Cross multiply
    14,321.68x = 19,759.44 × 8,271.14
  4. Step 4: Simplify right side
    14,321.68x = 163,433,094.56
  5. Step 5: Solve for x
    x = 163,433,094.56/14,321.68
  6. Step 6: Final answer
    x = 11,411.59

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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.