Home / 13,784.19-20,666.08-4,418.76

Finding the Fourth Proportional to 13,784.19, 20,666.08 and 4,418.76

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Solution

The fourth proportional to 13,784.19, 20,666.08 and 4,418.76 is: 6,624.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,784.19 : 20,666.08 = 4,418.76 : x
  2. Step 2: Convert to fraction form
    13,784.19/20,666.08 = 4,418.76/x
  3. Step 3: Cross multiply
    13,784.19x = 20,666.08 × 4,418.76
  4. Step 4: Simplify right side
    13,784.19x = 91,318,447.66
  5. Step 5: Solve for x
    x = 91,318,447.66/13,784.19
  6. Step 6: Final answer
    x = 6,624.87

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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.