Home / 13,604.72-20,405.64-4,370

Finding the Fourth Proportional to 13,604.72, 20,405.64 and 4,370

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Solution

The fourth proportional to 13,604.72, 20,405.64 and 4,370 is: 6,554.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,604.72 : 20,405.64 = 4,370 : x
  2. Step 2: Convert to fraction form
    13,604.72/20,405.64 = 4,370/x
  3. Step 3: Cross multiply
    13,604.72x = 20,405.64 × 4,370
  4. Step 4: Simplify right side
    13,604.72x = 89,172,646.80
  5. Step 5: Solve for x
    x = 89,172,646.80/13,604.72
  6. Step 6: Final answer
    x = 6,554.54

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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.