Home / 20,318.45-28,036.88-11,823.32

Finding the Fourth Proportional to 20,318.45, 28,036.88 and 11,823.32

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Solution

The fourth proportional to 20,318.45, 28,036.88 and 11,823.32 is: 16,314.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,318.45 : 28,036.88 = 11,823.32 : x
  2. Step 2: Convert to fraction form
    20,318.45/28,036.88 = 11,823.32/x
  3. Step 3: Cross multiply
    20,318.45x = 28,036.88 × 11,823.32
  4. Step 4: Simplify right side
    20,318.45x = 331,488,968.15
  5. Step 5: Solve for x
    x = 331,488,968.15/20,318.45
  6. Step 6: Final answer
    x = 16,314.68

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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.