Home / 20,070.09-27,684.19-12,909.33

Finding the Fourth Proportional to 20,070.09, 27,684.19 and 12,909.33

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Solution

The fourth proportional to 20,070.09, 27,684.19 and 12,909.33 is: 17,806.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,070.09 : 27,684.19 = 12,909.33 : x
  2. Step 2: Convert to fraction form
    20,070.09/27,684.19 = 12,909.33/x
  3. Step 3: Cross multiply
    20,070.09x = 27,684.19 × 12,909.33
  4. Step 4: Simplify right side
    20,070.09x = 357,384,344.49
  5. Step 5: Solve for x
    x = 357,384,344.49/20,070.09
  6. Step 6: Final answer
    x = 17,806.81

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1.5x scale

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.