Home / 13,721.08-20,587.04-5,825.31

Finding the Fourth Proportional to 13,721.08, 20,587.04 and 5,825.31

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Solution

The fourth proportional to 13,721.08, 20,587.04 and 5,825.31 is: 8,740.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,721.08 : 20,587.04 = 5,825.31 : x
  2. Step 2: Convert to fraction form
    13,721.08/20,587.04 = 5,825.31/x
  3. Step 3: Cross multiply
    13,721.08x = 20,587.04 × 5,825.31
  4. Step 4: Simplify right side
    13,721.08x = 119,925,889.98
  5. Step 5: Solve for x
    x = 119,925,889.98/13,721.08
  6. Step 6: Final answer
    x = 8,740.27

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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.