Home / 20,160.56-27,819.96-11,208.08

Finding the Fourth Proportional to 20,160.56, 27,819.96 and 11,208.08

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Solution

The fourth proportional to 20,160.56, 27,819.96 and 11,208.08 is: 15,466.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,160.56 : 27,819.96 = 11,208.08 : x
  2. Step 2: Convert to fraction form
    20,160.56/27,819.96 = 11,208.08/x
  3. Step 3: Cross multiply
    20,160.56x = 27,819.96 × 11,208.08
  4. Step 4: Simplify right side
    20,160.56x = 311,808,337.28
  5. Step 5: Solve for x
    x = 311,808,337.28/20,160.56
  6. Step 6: Final answer
    x = 15,466.25

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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.