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Finding the Fourth Proportional to 14,051.80, 21,063.30 and 8,205.40

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Solution

The fourth proportional to 14,051.80, 21,063.30 and 8,205.40 is: 12,299.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,051.80 : 21,063.30 = 8,205.40 : x
  2. Step 2: Convert to fraction form
    14,051.80/21,063.30 = 8,205.40/x
  3. Step 3: Cross multiply
    14,051.80x = 21,063.30 × 8,205.40
  4. Step 4: Simplify right side
    14,051.80x = 172,832,801.82
  5. Step 5: Solve for x
    x = 172,832,801.82/14,051.80
  6. Step 6: Final answer
    x = 12,299.69

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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.