Home / 20,160.33-27,820.53-11,208.21

Finding the Fourth Proportional to 20,160.33, 27,820.53 and 11,208.21

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Solution

The fourth proportional to 20,160.33, 27,820.53 and 11,208.21 is: 15,466.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,160.33 : 27,820.53 = 11,208.21 : x
  2. Step 2: Convert to fraction form
    20,160.33/27,820.53 = 11,208.21/x
  3. Step 3: Cross multiply
    20,160.33x = 27,820.53 × 11,208.21
  4. Step 4: Simplify right side
    20,160.33x = 311,818,342.55
  5. Step 5: Solve for x
    x = 311,818,342.55/20,160.33
  6. Step 6: Final answer
    x = 15,466.93

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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.