Home / 14,428.25-19,910.99-8,140.49

Finding the Fourth Proportional to 14,428.25, 19,910.99 and 8,140.49

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Solution

The fourth proportional to 14,428.25, 19,910.99 and 8,140.49 is: 11,233.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,428.25 : 19,910.99 = 8,140.49 : x
  2. Step 2: Convert to fraction form
    14,428.25/19,910.99 = 8,140.49/x
  3. Step 3: Cross multiply
    14,428.25x = 19,910.99 × 8,140.49
  4. Step 4: Simplify right side
    14,428.25x = 162,085,214.99
  5. Step 5: Solve for x
    x = 162,085,214.99/14,428.25
  6. Step 6: Final answer
    x = 11,233.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.