Home / 20,321.44-28,055.64-12,774.16

Finding the Fourth Proportional to 20,321.44, 28,055.64 and 12,774.16

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Solution

The fourth proportional to 20,321.44, 28,055.64 and 12,774.16 is: 17,635.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,321.44 : 28,055.64 = 12,774.16 : x
  2. Step 2: Convert to fraction form
    20,321.44/28,055.64 = 12,774.16/x
  3. Step 3: Cross multiply
    20,321.44x = 28,055.64 × 12,774.16
  4. Step 4: Simplify right side
    20,321.44x = 358,387,234.26
  5. Step 5: Solve for x
    x = 358,387,234.26/20,321.44
  6. Step 6: Final answer
    x = 17,635.92

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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.