Home / 51,215.75-76,823.67-14,279.75

Finding the Fourth Proportional to 51,215.75, 76,823.67 and 14,279.75

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Solution

The fourth proportional to 51,215.75, 76,823.67 and 14,279.75 is: 21,419.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,215.75 : 76,823.67 = 14,279.75 : x
  2. Step 2: Convert to fraction form
    51,215.75/76,823.67 = 14,279.75/x
  3. Step 3: Cross multiply
    51,215.75x = 76,823.67 × 14,279.75
  4. Step 4: Simplify right side
    51,215.75x = 1,097,022,801.68
  5. Step 5: Solve for x
    x = 1,097,022,801.68/51,215.75
  6. Step 6: Final answer
    x = 21,419.64

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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.