Home / 14,515.80-21,780.31-8,604.35

Finding the Fourth Proportional to 14,515.80, 21,780.31 and 8,604.35

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Solution

The fourth proportional to 14,515.80, 21,780.31 and 8,604.35 is: 12,910.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,515.80 : 21,780.31 = 8,604.35 : x
  2. Step 2: Convert to fraction form
    14,515.80/21,780.31 = 8,604.35/x
  3. Step 3: Cross multiply
    14,515.80x = 21,780.31 × 8,604.35
  4. Step 4: Simplify right side
    14,515.80x = 187,405,410.35
  5. Step 5: Solve for x
    x = 187,405,410.35/14,515.80
  6. Step 6: Final answer
    x = 12,910.44

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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.