Home / 21,236.41-31,718.81-19,232.12

Finding the Fourth Proportional to 21,236.41, 31,718.81 and 19,232.12

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Solution

The fourth proportional to 21,236.41, 31,718.81 and 19,232.12 is: 28,725.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,236.41 : 31,718.81 = 19,232.12 : x
  2. Step 2: Convert to fraction form
    21,236.41/31,718.81 = 19,232.12/x
  3. Step 3: Cross multiply
    21,236.41x = 31,718.81 × 19,232.12
  4. Step 4: Simplify right side
    21,236.41x = 610,019,801.58
  5. Step 5: Solve for x
    x = 610,019,801.58/21,236.41
  6. Step 6: Final answer
    x = 28,725.19

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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.