Home / 20,127.75-27,777.51-12,171.93

Finding the Fourth Proportional to 20,127.75, 27,777.51 and 12,171.93

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Solution

The fourth proportional to 20,127.75, 27,777.51 and 12,171.93 is: 16,798.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,127.75 : 27,777.51 = 12,171.93 : x
  2. Step 2: Convert to fraction form
    20,127.75/27,777.51 = 12,171.93/x
  3. Step 3: Cross multiply
    20,127.75x = 27,777.51 × 12,171.93
  4. Step 4: Simplify right side
    20,127.75x = 338,105,907.29
  5. Step 5: Solve for x
    x = 338,105,907.29/20,127.75
  6. Step 6: Final answer
    x = 16,798.00

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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.