Home / 20,182.71-27,851.69-11,685.20

Finding the Fourth Proportional to 20,182.71, 27,851.69 and 11,685.20

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Solution

The fourth proportional to 20,182.71, 27,851.69 and 11,685.20 is: 16,125.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,182.71 : 27,851.69 = 11,685.20 : x
  2. Step 2: Convert to fraction form
    20,182.71/27,851.69 = 11,685.20/x
  3. Step 3: Cross multiply
    20,182.71x = 27,851.69 × 11,685.20
  4. Step 4: Simplify right side
    20,182.71x = 325,452,567.99
  5. Step 5: Solve for x
    x = 325,452,567.99/20,182.71
  6. Step 6: Final answer
    x = 16,125.32

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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.