Home / 21,224.82-29,281.87-12,270.68

Finding the Fourth Proportional to 21,224.82, 29,281.87 and 12,270.68

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Solution

The fourth proportional to 21,224.82, 29,281.87 and 12,270.68 is: 16,928.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,224.82 : 29,281.87 = 12,270.68 : x
  2. Step 2: Convert to fraction form
    21,224.82/29,281.87 = 12,270.68/x
  3. Step 3: Cross multiply
    21,224.82x = 29,281.87 × 12,270.68
  4. Step 4: Simplify right side
    21,224.82x = 359,308,456.57
  5. Step 5: Solve for x
    x = 359,308,456.57/21,224.82
  6. Step 6: Final answer
    x = 16,928.69

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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.