Home / 20,751.16-28,636.54-11,319.66

Finding the Fourth Proportional to 20,751.16, 28,636.54 and 11,319.66

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Solution

The fourth proportional to 20,751.16, 28,636.54 and 11,319.66 is: 15,621.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,751.16 : 28,636.54 = 11,319.66 : x
  2. Step 2: Convert to fraction form
    20,751.16/28,636.54 = 11,319.66/x
  3. Step 3: Cross multiply
    20,751.16x = 28,636.54 × 11,319.66
  4. Step 4: Simplify right side
    20,751.16x = 324,155,803.14
  5. Step 5: Solve for x
    x = 324,155,803.14/20,751.16
  6. Step 6: Final answer
    x = 15,621.09

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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.