Home / 13,721.91-20,586.05-7,055.88

Finding the Fourth Proportional to 13,721.91, 20,586.05 and 7,055.88

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Solution

The fourth proportional to 13,721.91, 20,586.05 and 7,055.88 is: 10,585.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,721.91 : 20,586.05 = 7,055.88 : x
  2. Step 2: Convert to fraction form
    13,721.91/20,586.05 = 7,055.88/x
  3. Step 3: Cross multiply
    13,721.91x = 20,586.05 × 7,055.88
  4. Step 4: Simplify right side
    13,721.91x = 145,252,786.15
  5. Step 5: Solve for x
    x = 145,252,786.15/13,721.91
  6. Step 6: Final answer
    x = 10,585.47

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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.