Home / 20,155.76-27,810.54-11,202.68

Finding the Fourth Proportional to 20,155.76, 27,810.54 and 11,202.68

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Solution

The fourth proportional to 20,155.76, 27,810.54 and 11,202.68 is: 15,457.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,155.76 : 27,810.54 = 11,202.68 : x
  2. Step 2: Convert to fraction form
    20,155.76/27,810.54 = 11,202.68/x
  3. Step 3: Cross multiply
    20,155.76x = 27,810.54 × 11,202.68
  4. Step 4: Simplify right side
    20,155.76x = 311,552,580.25
  5. Step 5: Solve for x
    x = 311,552,580.25/20,155.76
  6. Step 6: Final answer
    x = 15,457.25

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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.