Home / 20,106.77-30,170.21-9,021.38

Finding the Fourth Proportional to 20,106.77, 30,170.21 and 9,021.38

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Solution

The fourth proportional to 20,106.77, 30,170.21 and 9,021.38 is: 13,536.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,106.77 : 30,170.21 = 9,021.38 : x
  2. Step 2: Convert to fraction form
    20,106.77/30,170.21 = 9,021.38/x
  3. Step 3: Cross multiply
    20,106.77x = 30,170.21 × 9,021.38
  4. Step 4: Simplify right side
    20,106.77x = 272,176,733.13
  5. Step 5: Solve for x
    x = 272,176,733.13/20,106.77
  6. Step 6: Final answer
    x = 13,536.58

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1.5x scale

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.