Home / 14,455.88-21,686.84-8,218.76

Finding the Fourth Proportional to 14,455.88, 21,686.84 and 8,218.76

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Solution

The fourth proportional to 14,455.88, 21,686.84 and 8,218.76 is: 12,329.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,455.88 : 21,686.84 = 8,218.76 : x
  2. Step 2: Convert to fraction form
    14,455.88/21,686.84 = 8,218.76/x
  3. Step 3: Cross multiply
    14,455.88x = 21,686.84 × 8,218.76
  4. Step 4: Simplify right side
    14,455.88x = 178,238,933.12
  5. Step 5: Solve for x
    x = 178,238,933.12/14,455.88
  6. Step 6: Final answer
    x = 12,329.86

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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.