Home / 20,157.60-27,815.58-11,204.04

Finding the Fourth Proportional to 20,157.60, 27,815.58 and 11,204.04

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Solution

The fourth proportional to 20,157.60, 27,815.58 and 11,204.04 is: 15,460.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,157.60 : 27,815.58 = 11,204.04 : x
  2. Step 2: Convert to fraction form
    20,157.60/27,815.58 = 11,204.04/x
  3. Step 3: Cross multiply
    20,157.60x = 27,815.58 × 11,204.04
  4. Step 4: Simplify right side
    20,157.60x = 311,646,870.94
  5. Step 5: Solve for x
    x = 311,646,870.94/20,157.60
  6. Step 6: Final answer
    x = 15,460.51

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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.