Home / 20,929.51-28,882.60-11,497.87

Finding the Fourth Proportional to 20,929.51, 28,882.60 and 11,497.87

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Solution

The fourth proportional to 20,929.51, 28,882.60 and 11,497.87 is: 15,866.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,929.51 : 28,882.60 = 11,497.87 : x
  2. Step 2: Convert to fraction form
    20,929.51/28,882.60 = 11,497.87/x
  3. Step 3: Cross multiply
    20,929.51x = 28,882.60 × 11,497.87
  4. Step 4: Simplify right side
    20,929.51x = 332,088,380.06
  5. Step 5: Solve for x
    x = 332,088,380.06/20,929.51
  6. Step 6: Final answer
    x = 15,866.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.