Home / 20,155.06-27,810.66-11,202.34

Finding the Fourth Proportional to 20,155.06, 27,810.66 and 11,202.34

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Solution

The fourth proportional to 20,155.06, 27,810.66 and 11,202.34 is: 15,457.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,155.06 : 27,810.66 = 11,202.34 : x
  2. Step 2: Convert to fraction form
    20,155.06/27,810.66 = 11,202.34/x
  3. Step 3: Cross multiply
    20,155.06x = 27,810.66 × 11,202.34
  4. Step 4: Simplify right side
    20,155.06x = 311,544,468.94
  5. Step 5: Solve for x
    x = 311,544,468.94/20,155.06
  6. Step 6: Final answer
    x = 15,457.38

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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.