Home / 20,673.11-28,519.75-12,284.75

Finding the Fourth Proportional to 20,673.11, 28,519.75 and 12,284.75

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Solution

The fourth proportional to 20,673.11, 28,519.75 and 12,284.75 is: 16,947.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,673.11 : 28,519.75 = 12,284.75 : x
  2. Step 2: Convert to fraction form
    20,673.11/28,519.75 = 12,284.75/x
  3. Step 3: Cross multiply
    20,673.11x = 28,519.75 × 12,284.75
  4. Step 4: Simplify right side
    20,673.11x = 350,357,998.81
  5. Step 5: Solve for x
    x = 350,357,998.81/20,673.11
  6. Step 6: Final answer
    x = 16,947.52

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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.