Home / 21,928.12-30,260.99-12,497.29

Finding the Fourth Proportional to 21,928.12, 30,260.99 and 12,497.29

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Solution

The fourth proportional to 21,928.12, 30,260.99 and 12,497.29 is: 17,246.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,928.12 : 30,260.99 = 12,497.29 : x
  2. Step 2: Convert to fraction form
    21,928.12/30,260.99 = 12,497.29/x
  3. Step 3: Cross multiply
    21,928.12x = 30,260.99 × 12,497.29
  4. Step 4: Simplify right side
    21,928.12x = 378,180,323.31
  5. Step 5: Solve for x
    x = 378,180,323.31/21,928.12
  6. Step 6: Final answer
    x = 17,246.37

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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.