Home / 20,159.83-27,821.49-11,208.25

Finding the Fourth Proportional to 20,159.83, 27,821.49 and 11,208.25

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Solution

The fourth proportional to 20,159.83, 27,821.49 and 11,208.25 is: 15,467.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,159.83 : 27,821.49 = 11,208.25 : x
  2. Step 2: Convert to fraction form
    20,159.83/27,821.49 = 11,208.25/x
  3. Step 3: Cross multiply
    20,159.83x = 27,821.49 × 11,208.25
  4. Step 4: Simplify right side
    20,159.83x = 311,830,215.29
  5. Step 5: Solve for x
    x = 311,830,215.29/20,159.83
  6. Step 6: Final answer
    x = 15,467.90

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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.