Home / 20,079.58-27,706.98-11,127.60

Finding the Fourth Proportional to 20,079.58, 27,706.98 and 11,127.60

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Solution

The fourth proportional to 20,079.58, 27,706.98 and 11,127.60 is: 15,354.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,079.58 : 27,706.98 = 11,127.60 : x
  2. Step 2: Convert to fraction form
    20,079.58/27,706.98 = 11,127.60/x
  3. Step 3: Cross multiply
    20,079.58x = 27,706.98 × 11,127.60
  4. Step 4: Simplify right side
    20,079.58x = 308,312,190.65
  5. Step 5: Solve for x
    x = 308,312,190.65/20,079.58
  6. Step 6: Final answer
    x = 15,354.51

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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.