Home / 20,130.93-27,769.77-12,849.44

Finding the Fourth Proportional to 20,130.93, 27,769.77 and 12,849.44

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Solution

The fourth proportional to 20,130.93, 27,769.77 and 12,849.44 is: 17,725.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,130.93 : 27,769.77 = 12,849.44 : x
  2. Step 2: Convert to fraction form
    20,130.93/27,769.77 = 12,849.44/x
  3. Step 3: Cross multiply
    20,130.93x = 27,769.77 × 12,849.44
  4. Step 4: Simplify right side
    20,130.93x = 356,825,854.58
  5. Step 5: Solve for x
    x = 356,825,854.58/20,130.93
  6. Step 6: Final answer
    x = 17,725.25

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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.