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Finding the Fourth Proportional to 19,367.50, 26,700.12 and 12,982.96

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Solution

The fourth proportional to 19,367.50, 26,700.12 and 12,982.96 is: 17,898.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,367.50 : 26,700.12 = 12,982.96 : x
  2. Step 2: Convert to fraction form
    19,367.50/26,700.12 = 12,982.96/x
  3. Step 3: Cross multiply
    19,367.50x = 26,700.12 × 12,982.96
  4. Step 4: Simplify right side
    19,367.50x = 346,646,589.96
  5. Step 5: Solve for x
    x = 346,646,589.96/19,367.50
  6. Step 6: Final answer
    x = 17,898.37

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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.