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Finding the Fourth Proportional to 14,124.68, 21,207.84 and 7,896.90

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Solution

The fourth proportional to 14,124.68, 21,207.84 and 7,896.90 is: 11,856.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,124.68 : 21,207.84 = 7,896.90 : x
  2. Step 2: Convert to fraction form
    14,124.68/21,207.84 = 7,896.90/x
  3. Step 3: Cross multiply
    14,124.68x = 21,207.84 × 7,896.90
  4. Step 4: Simplify right side
    14,124.68x = 167,476,191.70
  5. Step 5: Solve for x
    x = 167,476,191.70/14,124.68
  6. Step 6: Final answer
    x = 11,856.99

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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.