Home / 15,820.39-21,833.45-8,749.09

Finding the Fourth Proportional to 15,820.39, 21,833.45 and 8,749.09

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Solution

The fourth proportional to 15,820.39, 21,833.45 and 8,749.09 is: 12,074.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,820.39 : 21,833.45 = 8,749.09 : x
  2. Step 2: Convert to fraction form
    15,820.39/21,833.45 = 8,749.09/x
  3. Step 3: Cross multiply
    15,820.39x = 21,833.45 × 8,749.09
  4. Step 4: Simplify right side
    15,820.39x = 191,022,819.06
  5. Step 5: Solve for x
    x = 191,022,819.06/15,820.39
  6. Step 6: Final answer
    x = 12,074.47

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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.