Home / 20,079.65-27,710.08-11,127.30

Finding the Fourth Proportional to 20,079.65, 27,710.08 and 11,127.30

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Solution

The fourth proportional to 20,079.65, 27,710.08 and 11,127.30 is: 15,355.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,079.65 : 27,710.08 = 11,127.30 : x
  2. Step 2: Convert to fraction form
    20,079.65/27,710.08 = 11,127.30/x
  3. Step 3: Cross multiply
    20,079.65x = 27,710.08 × 11,127.30
  4. Step 4: Simplify right side
    20,079.65x = 308,338,359.27
  5. Step 5: Solve for x
    x = 308,338,359.27/20,079.65
  6. Step 6: Final answer
    x = 15,355.76

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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.