Home / 20,160.18-27,820.82-11,208.47

Finding the Fourth Proportional to 20,160.18, 27,820.82 and 11,208.47

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Solution

The fourth proportional to 20,160.18, 27,820.82 and 11,208.47 is: 15,467.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,160.18 : 27,820.82 = 11,208.47 : x
  2. Step 2: Convert to fraction form
    20,160.18/27,820.82 = 11,208.47/x
  3. Step 3: Cross multiply
    20,160.18x = 27,820.82 × 11,208.47
  4. Step 4: Simplify right side
    20,160.18x = 311,828,631.20
  5. Step 5: Solve for x
    x = 311,828,631.20/20,160.18
  6. Step 6: Final answer
    x = 15,467.55

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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.