Home / 16,512.60-24,722.10-12,821.40

Finding the Fourth Proportional to 16,512.60, 24,722.10 and 12,821.40

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Solution

The fourth proportional to 16,512.60, 24,722.10 and 12,821.40 is: 19,195.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,512.60 : 24,722.10 = 12,821.40 : x
  2. Step 2: Convert to fraction form
    16,512.60/24,722.10 = 12,821.40/x
  3. Step 3: Cross multiply
    16,512.60x = 24,722.10 × 12,821.40
  4. Step 4: Simplify right side
    16,512.60x = 316,971,932.94
  5. Step 5: Solve for x
    x = 316,971,932.94/16,512.60
  6. Step 6: Final answer
    x = 19,195.76

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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.