Home / 14,428.15-21,676.91-13,631.60

Finding the Fourth Proportional to 14,428.15, 21,676.91 and 13,631.60

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Solution

The fourth proportional to 14,428.15, 21,676.91 and 13,631.60 is: 20,480.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,428.15 : 21,676.91 = 13,631.60 : x
  2. Step 2: Convert to fraction form
    14,428.15/21,676.91 = 13,631.60/x
  3. Step 3: Cross multiply
    14,428.15x = 21,676.91 × 13,631.60
  4. Step 4: Simplify right side
    14,428.15x = 295,490,952.39
  5. Step 5: Solve for x
    x = 295,490,952.39/14,428.15
  6. Step 6: Final answer
    x = 20,480.17

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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.