Home / 13,611.24-20,416.38-4,377

Finding the Fourth Proportional to 13,611.24, 20,416.38 and 4,377

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Solution

The fourth proportional to 13,611.24, 20,416.38 and 4,377 is: 6,565.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,611.24 : 20,416.38 = 4,377 : x
  2. Step 2: Convert to fraction form
    13,611.24/20,416.38 = 4,377/x
  3. Step 3: Cross multiply
    13,611.24x = 20,416.38 × 4,377
  4. Step 4: Simplify right side
    13,611.24x = 89,362,495.26
  5. Step 5: Solve for x
    x = 89,362,495.26/13,611.24
  6. Step 6: Final answer
    x = 6,565.35

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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.