Home / 51,255.78-76,883.70-14,319.78

Finding the Fourth Proportional to 51,255.78, 76,883.70 and 14,319.78

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Solution

The fourth proportional to 51,255.78, 76,883.70 and 14,319.78 is: 21,479.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,255.78 : 76,883.70 = 14,319.78 : x
  2. Step 2: Convert to fraction form
    51,255.78/76,883.70 = 14,319.78/x
  3. Step 3: Cross multiply
    51,255.78x = 76,883.70 × 14,319.78
  4. Step 4: Simplify right side
    51,255.78x = 1,100,957,669.59
  5. Step 5: Solve for x
    x = 1,100,957,669.59/51,255.78
  6. Step 6: Final answer
    x = 21,479.68

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1.5x scale

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.