Home / 20,899.64-28,841.12-11,824.91

Finding the Fourth Proportional to 20,899.64, 28,841.12 and 11,824.91

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Solution

The fourth proportional to 20,899.64, 28,841.12 and 11,824.91 is: 16,318.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,899.64 : 28,841.12 = 11,824.91 : x
  2. Step 2: Convert to fraction form
    20,899.64/28,841.12 = 11,824.91/x
  3. Step 3: Cross multiply
    20,899.64x = 28,841.12 × 11,824.91
  4. Step 4: Simplify right side
    20,899.64x = 341,043,641.81
  5. Step 5: Solve for x
    x = 341,043,641.81/20,899.64
  6. Step 6: Final answer
    x = 16,318.16

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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.