Home / 20,289.34-27,999.43-11,337.22

Finding the Fourth Proportional to 20,289.34, 27,999.43 and 11,337.22

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Solution

The fourth proportional to 20,289.34, 27,999.43 and 11,337.22 is: 15,645.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,289.34 : 27,999.43 = 11,337.22 : x
  2. Step 2: Convert to fraction form
    20,289.34/27,999.43 = 11,337.22/x
  3. Step 3: Cross multiply
    20,289.34x = 27,999.43 × 11,337.22
  4. Step 4: Simplify right side
    20,289.34x = 317,435,697.78
  5. Step 5: Solve for x
    x = 317,435,697.78/20,289.34
  6. Step 6: Final answer
    x = 15,645.44

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Half scale
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Double scale
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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.