Home / 20,439.03-28,204.97-11,486.34

Finding the Fourth Proportional to 20,439.03, 28,204.97 and 11,486.34

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Solution

The fourth proportional to 20,439.03, 28,204.97 and 11,486.34 is: 15,850.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,439.03 : 28,204.97 = 11,486.34 : x
  2. Step 2: Convert to fraction form
    20,439.03/28,204.97 = 11,486.34/x
  3. Step 3: Cross multiply
    20,439.03x = 28,204.97 × 11,486.34
  4. Step 4: Simplify right side
    20,439.03x = 323,971,875.11
  5. Step 5: Solve for x
    x = 323,971,875.11/20,439.03
  6. Step 6: Final answer
    x = 15,850.65

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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.