Home / 21,236.91-31,719.56-19,232.62

Finding the Fourth Proportional to 21,236.91, 31,719.56 and 19,232.62

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Solution

The fourth proportional to 21,236.91, 31,719.56 and 19,232.62 is: 28,725.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,236.91 : 31,719.56 = 19,232.62 : x
  2. Step 2: Convert to fraction form
    21,236.91/31,719.56 = 19,232.62/x
  3. Step 3: Cross multiply
    21,236.91x = 31,719.56 × 19,232.62
  4. Step 4: Simplify right side
    21,236.91x = 610,049,989.29
  5. Step 5: Solve for x
    x = 610,049,989.29/21,236.91
  6. Step 6: Final answer
    x = 28,725.94

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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.