Home / 13,909.43-20,869.47-5,591.84

Finding the Fourth Proportional to 13,909.43, 20,869.47 and 5,591.84

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Solution

The fourth proportional to 13,909.43, 20,869.47 and 5,591.84 is: 8,389.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,909.43 : 20,869.47 = 5,591.84 : x
  2. Step 2: Convert to fraction form
    13,909.43/20,869.47 = 5,591.84/x
  3. Step 3: Cross multiply
    13,909.43x = 20,869.47 × 5,591.84
  4. Step 4: Simplify right side
    13,909.43x = 116,698,632.78
  5. Step 5: Solve for x
    x = 116,698,632.78/13,909.43
  6. Step 6: Final answer
    x = 8,389.90

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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.