Home / 20,884.88-28,826.16-14,181.68

Finding the Fourth Proportional to 20,884.88, 28,826.16 and 14,181.68

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Solution

The fourth proportional to 20,884.88, 28,826.16 and 14,181.68 is: 19,574.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,884.88 : 28,826.16 = 14,181.68 : x
  2. Step 2: Convert to fraction form
    20,884.88/28,826.16 = 14,181.68/x
  3. Step 3: Cross multiply
    20,884.88x = 28,826.16 × 14,181.68
  4. Step 4: Simplify right side
    20,884.88x = 408,803,376.75
  5. Step 5: Solve for x
    x = 408,803,376.75/20,884.88
  6. Step 6: Final answer
    x = 19,574.13

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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.