Home / 13,672.30-20,509.23-4,312.62

Finding the Fourth Proportional to 13,672.30, 20,509.23 and 4,312.62

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Solution

The fourth proportional to 13,672.30, 20,509.23 and 4,312.62 is: 6,469.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,672.30 : 20,509.23 = 4,312.62 : x
  2. Step 2: Convert to fraction form
    13,672.30/20,509.23 = 4,312.62/x
  3. Step 3: Cross multiply
    13,672.30x = 20,509.23 × 4,312.62
  4. Step 4: Simplify right side
    13,672.30x = 88,448,515.48
  5. Step 5: Solve for x
    x = 88,448,515.48/13,672.30
  6. Step 6: Final answer
    x = 6,469.18

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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.