Home / 20,133.50-27,785.15-11,181.04

Finding the Fourth Proportional to 20,133.50, 27,785.15 and 11,181.04

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Solution

The fourth proportional to 20,133.50, 27,785.15 and 11,181.04 is: 15,430.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,133.50 : 27,785.15 = 11,181.04 : x
  2. Step 2: Convert to fraction form
    20,133.50/27,785.15 = 11,181.04/x
  3. Step 3: Cross multiply
    20,133.50x = 27,785.15 × 11,181.04
  4. Step 4: Simplify right side
    20,133.50x = 310,666,832.05
  5. Step 5: Solve for x
    x = 310,666,832.05/20,133.50
  6. Step 6: Final answer
    x = 15,430.35

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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.