Home / 20,157.59-27,816.26-11,204.78

Finding the Fourth Proportional to 20,157.59, 27,816.26 and 11,204.78

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Solution

The fourth proportional to 20,157.59, 27,816.26 and 11,204.78 is: 15,461.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,157.59 : 27,816.26 = 11,204.78 : x
  2. Step 2: Convert to fraction form
    20,157.59/27,816.26 = 11,204.78/x
  3. Step 3: Cross multiply
    20,157.59x = 27,816.26 × 11,204.78
  4. Step 4: Simplify right side
    20,157.59x = 311,674,878.62
  5. Step 5: Solve for x
    x = 311,674,878.62/20,157.59
  6. Step 6: Final answer
    x = 15,461.91

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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.