Home / 14,283.76-21,425.36-7,722.80

Finding the Fourth Proportional to 14,283.76, 21,425.36 and 7,722.80

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Solution

The fourth proportional to 14,283.76, 21,425.36 and 7,722.80 is: 11,584.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,283.76 : 21,425.36 = 7,722.80 : x
  2. Step 2: Convert to fraction form
    14,283.76/21,425.36 = 7,722.80/x
  3. Step 3: Cross multiply
    14,283.76x = 21,425.36 × 7,722.80
  4. Step 4: Simplify right side
    14,283.76x = 165,463,770.21
  5. Step 5: Solve for x
    x = 165,463,770.21/14,283.76
  6. Step 6: Final answer
    x = 11,584.05

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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.