Home / 28,383.25-39,170.10-15,808

Finding the Fourth Proportional to 28,383.25, 39,170.10 and 15,808

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Solution

The fourth proportional to 28,383.25, 39,170.10 and 15,808 is: 21,815.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,383.25 : 39,170.10 = 15,808 : x
  2. Step 2: Convert to fraction form
    28,383.25/39,170.10 = 15,808/x
  3. Step 3: Cross multiply
    28,383.25x = 39,170.10 × 15,808
  4. Step 4: Simplify right side
    28,383.25x = 619,200,940.80
  5. Step 5: Solve for x
    x = 619,200,940.80/28,383.25
  6. Step 6: Final answer
    x = 21,815.72

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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.