Home / 21,240.92-31,725.52-19,236.62

Finding the Fourth Proportional to 21,240.92, 31,725.52 and 19,236.62

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Solution

The fourth proportional to 21,240.92, 31,725.52 and 19,236.62 is: 28,731.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,240.92 : 31,725.52 = 19,236.62 : x
  2. Step 2: Convert to fraction form
    21,240.92/31,725.52 = 19,236.62/x
  3. Step 3: Cross multiply
    21,240.92x = 31,725.52 × 19,236.62
  4. Step 4: Simplify right side
    21,240.92x = 610,291,772.54
  5. Step 5: Solve for x
    x = 610,291,772.54/21,240.92
  6. Step 6: Final answer
    x = 28,731.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.