Home / 15,764.39-21,756.38-11,778.58

Finding the Fourth Proportional to 15,764.39, 21,756.38 and 11,778.58

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Solution

The fourth proportional to 15,764.39, 21,756.38 and 11,778.58 is: 16,255.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,764.39 : 21,756.38 = 11,778.58 : x
  2. Step 2: Convert to fraction form
    15,764.39/21,756.38 = 11,778.58/x
  3. Step 3: Cross multiply
    15,764.39x = 21,756.38 × 11,778.58
  4. Step 4: Simplify right side
    15,764.39x = 256,259,262.34
  5. Step 5: Solve for x
    x = 256,259,262.34/15,764.39
  6. Step 6: Final answer
    x = 16,255.58

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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.