Home / 15,749.69-21,734.30-8,676.05

Finding the Fourth Proportional to 15,749.69, 21,734.30 and 8,676.05

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Solution

The fourth proportional to 15,749.69, 21,734.30 and 8,676.05 is: 11,972.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,749.69 : 21,734.30 = 8,676.05 : x
  2. Step 2: Convert to fraction form
    15,749.69/21,734.30 = 8,676.05/x
  3. Step 3: Cross multiply
    15,749.69x = 21,734.30 × 8,676.05
  4. Step 4: Simplify right side
    15,749.69x = 188,567,830.13
  5. Step 5: Solve for x
    x = 188,567,830.13/15,749.69
  6. Step 6: Final answer
    x = 11,972.80

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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.