Home / 21,829.94-32,721.60-12,449.76

Finding the Fourth Proportional to 21,829.94, 32,721.60 and 12,449.76

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Solution

The fourth proportional to 21,829.94, 32,721.60 and 12,449.76 is: 18,661.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,829.94 : 32,721.60 = 12,449.76 : x
  2. Step 2: Convert to fraction form
    21,829.94/32,721.60 = 12,449.76/x
  3. Step 3: Cross multiply
    21,829.94x = 32,721.60 × 12,449.76
  4. Step 4: Simplify right side
    21,829.94x = 407,376,004.57
  5. Step 5: Solve for x
    x = 407,376,004.57/21,829.94
  6. Step 6: Final answer
    x = 18,661.34

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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.