Home / 14,043.78-21,003.70-12,494.65

Finding the Fourth Proportional to 14,043.78, 21,003.70 and 12,494.65

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Solution

The fourth proportional to 14,043.78, 21,003.70 and 12,494.65 is: 18,686.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,043.78 : 21,003.70 = 12,494.65 : x
  2. Step 2: Convert to fraction form
    14,043.78/21,003.70 = 12,494.65/x
  3. Step 3: Cross multiply
    14,043.78x = 21,003.70 × 12,494.65
  4. Step 4: Simplify right side
    14,043.78x = 262,433,848.97
  5. Step 5: Solve for x
    x = 262,433,848.97/14,043.78
  6. Step 6: Final answer
    x = 18,686.85

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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.