Home / 14,190.40-21,265.68-11,215.78

Finding the Fourth Proportional to 14,190.40, 21,265.68 and 11,215.78

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Solution

The fourth proportional to 14,190.40, 21,265.68 and 11,215.78 is: 16,807.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,190.40 : 21,265.68 = 11,215.78 : x
  2. Step 2: Convert to fraction form
    14,190.40/21,265.68 = 11,215.78/x
  3. Step 3: Cross multiply
    14,190.40x = 21,265.68 × 11,215.78
  4. Step 4: Simplify right side
    14,190.40x = 238,511,188.43
  5. Step 5: Solve for x
    x = 238,511,188.43/14,190.40
  6. Step 6: Final answer
    x = 16,807.93

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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.