Home / 15,764.65-21,756.74-11,778.84

Finding the Fourth Proportional to 15,764.65, 21,756.74 and 11,778.84

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Solution

The fourth proportional to 15,764.65, 21,756.74 and 11,778.84 is: 16,255.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,764.65 : 21,756.74 = 11,778.84 : x
  2. Step 2: Convert to fraction form
    15,764.65/21,756.74 = 11,778.84/x
  3. Step 3: Cross multiply
    15,764.65x = 21,756.74 × 11,778.84
  4. Step 4: Simplify right side
    15,764.65x = 256,269,100.49
  5. Step 5: Solve for x
    x = 256,269,100.49/15,764.65
  6. Step 6: Final answer
    x = 16,255.94

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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.