Home / 20,786.09-28,675.01-12,282.53

Finding the Fourth Proportional to 20,786.09, 28,675.01 and 12,282.53

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Solution

The fourth proportional to 20,786.09, 28,675.01 and 12,282.53 is: 16,944.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,786.09 : 28,675.01 = 12,282.53 : x
  2. Step 2: Convert to fraction form
    20,786.09/28,675.01 = 12,282.53/x
  3. Step 3: Cross multiply
    20,786.09x = 28,675.01 × 12,282.53
  4. Step 4: Simplify right side
    20,786.09x = 352,201,465.79
  5. Step 5: Solve for x
    x = 352,201,465.79/20,786.09
  6. Step 6: Final answer
    x = 16,944.10

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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.