Home / 28,913.90-43,284.45-17,221.10

Finding the Fourth Proportional to 28,913.90, 43,284.45 and 17,221.10

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Solution

The fourth proportional to 28,913.90, 43,284.45 and 17,221.10 is: 25,780.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,913.90 : 43,284.45 = 17,221.10 : x
  2. Step 2: Convert to fraction form
    28,913.90/43,284.45 = 17,221.10/x
  3. Step 3: Cross multiply
    28,913.90x = 43,284.45 × 17,221.10
  4. Step 4: Simplify right side
    28,913.90x = 745,405,841.90
  5. Step 5: Solve for x
    x = 745,405,841.90/28,913.90
  6. Step 6: Final answer
    x = 25,780.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.