Home / 13,569.20-20,356.71-4,209.02

Finding the Fourth Proportional to 13,569.20, 20,356.71 and 4,209.02

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Solution

The fourth proportional to 13,569.20, 20,356.71 and 4,209.02 is: 6,314.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,569.20 : 20,356.71 = 4,209.02 : x
  2. Step 2: Convert to fraction form
    13,569.20/20,356.71 = 4,209.02/x
  3. Step 3: Cross multiply
    13,569.20x = 20,356.71 × 4,209.02
  4. Step 4: Simplify right side
    13,569.20x = 85,681,676.70
  5. Step 5: Solve for x
    x = 85,681,676.70/13,569.20
  6. Step 6: Final answer
    x = 6,314.42

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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.