Home / 13,812.76-20,721.26-5,045.59

Finding the Fourth Proportional to 13,812.76, 20,721.26 and 5,045.59

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Solution

The fourth proportional to 13,812.76, 20,721.26 and 5,045.59 is: 7,569.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,812.76 : 20,721.26 = 5,045.59 : x
  2. Step 2: Convert to fraction form
    13,812.76/20,721.26 = 5,045.59/x
  3. Step 3: Cross multiply
    13,812.76x = 20,721.26 × 5,045.59
  4. Step 4: Simplify right side
    13,812.76x = 104,550,982.24
  5. Step 5: Solve for x
    x = 104,550,982.24/13,812.76
  6. Step 6: Final answer
    x = 7,569.16

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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.