Home / 20,488.72-30,708.14-11,106.48

Finding the Fourth Proportional to 20,488.72, 30,708.14 and 11,106.48

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Solution

The fourth proportional to 20,488.72, 30,708.14 and 11,106.48 is: 16,646.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,488.72 : 30,708.14 = 11,106.48 : x
  2. Step 2: Convert to fraction form
    20,488.72/30,708.14 = 11,106.48/x
  3. Step 3: Cross multiply
    20,488.72x = 30,708.14 × 11,106.48
  4. Step 4: Simplify right side
    20,488.72x = 341,059,342.75
  5. Step 5: Solve for x
    x = 341,059,342.75/20,488.72
  6. Step 6: Final answer
    x = 16,646.20

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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.