Home / 20,742.03-28,624.05-11,311.20

Finding the Fourth Proportional to 20,742.03, 28,624.05 and 11,311.20

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Solution

The fourth proportional to 20,742.03, 28,624.05 and 11,311.20 is: 15,609.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,742.03 : 28,624.05 = 11,311.20 : x
  2. Step 2: Convert to fraction form
    20,742.03/28,624.05 = 11,311.20/x
  3. Step 3: Cross multiply
    20,742.03x = 28,624.05 × 11,311.20
  4. Step 4: Simplify right side
    20,742.03x = 323,772,354.36
  5. Step 5: Solve for x
    x = 323,772,354.36/20,742.03
  6. Step 6: Final answer
    x = 15,609.48

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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.