Home / 14,443.80-21,665.70-13,579.80

Finding the Fourth Proportional to 14,443.80, 21,665.70 and 13,579.80

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Solution

The fourth proportional to 14,443.80, 21,665.70 and 13,579.80 is: 20,369.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,443.80 : 21,665.70 = 13,579.80 : x
  2. Step 2: Convert to fraction form
    14,443.80/21,665.70 = 13,579.80/x
  3. Step 3: Cross multiply
    14,443.80x = 21,665.70 × 13,579.80
  4. Step 4: Simplify right side
    14,443.80x = 294,215,872.86
  5. Step 5: Solve for x
    x = 294,215,872.86/14,443.80
  6. Step 6: Final answer
    x = 20,369.70

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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.