Home / 13,929.12-20,897.28-5,166.54

Finding the Fourth Proportional to 13,929.12, 20,897.28 and 5,166.54

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Solution

The fourth proportional to 13,929.12, 20,897.28 and 5,166.54 is: 7,751.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,929.12 : 20,897.28 = 5,166.54 : x
  2. Step 2: Convert to fraction form
    13,929.12/20,897.28 = 5,166.54/x
  3. Step 3: Cross multiply
    13,929.12x = 20,897.28 × 5,166.54
  4. Step 4: Simplify right side
    13,929.12x = 107,966,633.01
  5. Step 5: Solve for x
    x = 107,966,633.01/13,929.12
  6. Step 6: Final answer
    x = 7,751.15

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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.