Home / 13,666.54-18,849.36-10,309.90

Finding the Fourth Proportional to 13,666.54, 18,849.36 and 10,309.90

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Solution

The fourth proportional to 13,666.54, 18,849.36 and 10,309.90 is: 14,219.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,666.54 : 18,849.36 = 10,309.90 : x
  2. Step 2: Convert to fraction form
    13,666.54/18,849.36 = 10,309.90/x
  3. Step 3: Cross multiply
    13,666.54x = 18,849.36 × 10,309.90
  4. Step 4: Simplify right side
    13,666.54x = 194,335,016.66
  5. Step 5: Solve for x
    x = 194,335,016.66/13,666.54
  6. Step 6: Final answer
    x = 14,219.77

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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.