Home / 20,160.16-27,821.13-11,208.50

Finding the Fourth Proportional to 20,160.16, 27,821.13 and 11,208.50

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Solution

The fourth proportional to 20,160.16, 27,821.13 and 11,208.50 is: 15,467.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,160.16 : 27,821.13 = 11,208.50 : x
  2. Step 2: Convert to fraction form
    20,160.16/27,821.13 = 11,208.50/x
  3. Step 3: Cross multiply
    20,160.16x = 27,821.13 × 11,208.50
  4. Step 4: Simplify right side
    20,160.16x = 311,833,142.86
  5. Step 5: Solve for x
    x = 311,833,142.86/20,160.16
  6. Step 6: Final answer
    x = 15,467.79

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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.