Home / 20,079.60-27,706.96-11,127.60

Finding the Fourth Proportional to 20,079.60, 27,706.96 and 11,127.60

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Solution

The fourth proportional to 20,079.60, 27,706.96 and 11,127.60 is: 15,354.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,079.60 : 27,706.96 = 11,127.60 : x
  2. Step 2: Convert to fraction form
    20,079.60/27,706.96 = 11,127.60/x
  3. Step 3: Cross multiply
    20,079.60x = 27,706.96 × 11,127.60
  4. Step 4: Simplify right side
    20,079.60x = 308,311,968.10
  5. Step 5: Solve for x
    x = 308,311,968.10/20,079.60
  6. Step 6: Final answer
    x = 15,354.49

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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.