Home / 13,721.07-20,579.45-4,359.86

Finding the Fourth Proportional to 13,721.07, 20,579.45 and 4,359.86

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Solution

The fourth proportional to 13,721.07, 20,579.45 and 4,359.86 is: 6,539.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,721.07 : 20,579.45 = 4,359.86 : x
  2. Step 2: Convert to fraction form
    13,721.07/20,579.45 = 4,359.86/x
  3. Step 3: Cross multiply
    13,721.07x = 20,579.45 × 4,359.86
  4. Step 4: Simplify right side
    13,721.07x = 89,723,417.98
  5. Step 5: Solve for x
    x = 89,723,417.98/13,721.07
  6. Step 6: Final answer
    x = 6,539.10

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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.