Home / 20,433.36-28,196.30-11,480.16

Finding the Fourth Proportional to 20,433.36, 28,196.30 and 11,480.16

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Solution

The fourth proportional to 20,433.36, 28,196.30 and 11,480.16 is: 15,841.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,433.36 : 28,196.30 = 11,480.16 : x
  2. Step 2: Convert to fraction form
    20,433.36/28,196.30 = 11,480.16/x
  3. Step 3: Cross multiply
    20,433.36x = 28,196.30 × 11,480.16
  4. Step 4: Simplify right side
    20,433.36x = 323,698,035.41
  5. Step 5: Solve for x
    x = 323,698,035.41/20,433.36
  6. Step 6: Final answer
    x = 15,841.65

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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.