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Finding the Fourth Proportional to 14,051.80, 21,077.70 and 12,982.60

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Solution

The fourth proportional to 14,051.80, 21,077.70 and 12,982.60 is: 19,473.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,051.80 : 21,077.70 = 12,982.60 : x
  2. Step 2: Convert to fraction form
    14,051.80/21,077.70 = 12,982.60/x
  3. Step 3: Cross multiply
    14,051.80x = 21,077.70 × 12,982.60
  4. Step 4: Simplify right side
    14,051.80x = 273,643,348.02
  5. Step 5: Solve for x
    x = 273,643,348.02/14,051.80
  6. Step 6: Final answer
    x = 19,473.90

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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.