Home / 14,123.80-21,179.30-5,355.80

Finding the Fourth Proportional to 14,123.80, 21,179.30 and 5,355.80

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Solution

The fourth proportional to 14,123.80, 21,179.30 and 5,355.80 is: 8,031.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,123.80 : 21,179.30 = 5,355.80 : x
  2. Step 2: Convert to fraction form
    14,123.80/21,179.30 = 5,355.80/x
  3. Step 3: Cross multiply
    14,123.80x = 21,179.30 × 5,355.80
  4. Step 4: Simplify right side
    14,123.80x = 113,432,094.94
  5. Step 5: Solve for x
    x = 113,432,094.94/14,123.80
  6. Step 6: Final answer
    x = 8,031.27

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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.