Home / 14,123.90-21,185.70-3,450.36

Finding the Fourth Proportional to 14,123.90, 21,185.70 and 3,450.36

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Solution

The fourth proportional to 14,123.90, 21,185.70 and 3,450.36 is: 5,175.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,123.90 : 21,185.70 = 3,450.36 : x
  2. Step 2: Convert to fraction form
    14,123.90/21,185.70 = 3,450.36/x
  3. Step 3: Cross multiply
    14,123.90x = 21,185.70 × 3,450.36
  4. Step 4: Simplify right side
    14,123.90x = 73,098,265.07
  5. Step 5: Solve for x
    x = 73,098,265.07/14,123.90
  6. Step 6: Final answer
    x = 5,175.50

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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.