Home / 28,198.71-38,860.65-20,227.14

Finding the Fourth Proportional to 28,198.71, 38,860.65 and 20,227.14

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Solution

The fourth proportional to 28,198.71, 38,860.65 and 20,227.14 is: 27,875.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,198.71 : 38,860.65 = 20,227.14 : x
  2. Step 2: Convert to fraction form
    28,198.71/38,860.65 = 20,227.14/x
  3. Step 3: Cross multiply
    28,198.71x = 38,860.65 × 20,227.14
  4. Step 4: Simplify right side
    28,198.71x = 786,039,808.04
  5. Step 5: Solve for x
    x = 786,039,808.04/28,198.71
  6. Step 6: Final answer
    x = 27,875.03

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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.