Home / 14,123.45-21,206.10-7,895.90

Finding the Fourth Proportional to 14,123.45, 21,206.10 and 7,895.90

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Solution

The fourth proportional to 14,123.45, 21,206.10 and 7,895.90 is: 11,855.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,123.45 : 21,206.10 = 7,895.90 : x
  2. Step 2: Convert to fraction form
    14,123.45/21,206.10 = 7,895.90/x
  3. Step 3: Cross multiply
    14,123.45x = 21,206.10 × 7,895.90
  4. Step 4: Simplify right side
    14,123.45x = 167,441,244.99
  5. Step 5: Solve for x
    x = 167,441,244.99/14,123.45
  6. Step 6: Final answer
    x = 11,855.55

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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.