Home / 20,079.99-27,710.62-11,127.65

Finding the Fourth Proportional to 20,079.99, 27,710.62 and 11,127.65

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Solution

The fourth proportional to 20,079.99, 27,710.62 and 11,127.65 is: 15,356.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,079.99 : 27,710.62 = 11,127.65 : x
  2. Step 2: Convert to fraction form
    20,079.99/27,710.62 = 11,127.65/x
  3. Step 3: Cross multiply
    20,079.99x = 27,710.62 × 11,127.65
  4. Step 4: Simplify right side
    20,079.99x = 308,353,914.27
  5. Step 5: Solve for x
    x = 308,353,914.27/20,079.99
  6. Step 6: Final answer
    x = 15,356.28

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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.