Home / 13,625.91-20,434.55-4,389.75

Finding the Fourth Proportional to 13,625.91, 20,434.55 and 4,389.75

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Solution

The fourth proportional to 13,625.91, 20,434.55 and 4,389.75 is: 6,583.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,625.91 : 20,434.55 = 4,389.75 : x
  2. Step 2: Convert to fraction form
    13,625.91/20,434.55 = 4,389.75/x
  3. Step 3: Cross multiply
    13,625.91x = 20,434.55 × 4,389.75
  4. Step 4: Simplify right side
    13,625.91x = 89,702,543.91
  5. Step 5: Solve for x
    x = 89,702,543.91/13,625.91
  6. Step 6: Final answer
    x = 6,583.23

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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.