Home / 21,286.16-31,896.30-14,625.84

Finding the Fourth Proportional to 21,286.16, 31,896.30 and 14,625.84

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Solution

The fourth proportional to 21,286.16, 31,896.30 and 14,625.84 is: 21,916.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,286.16 : 31,896.30 = 14,625.84 : x
  2. Step 2: Convert to fraction form
    21,286.16/31,896.30 = 14,625.84/x
  3. Step 3: Cross multiply
    21,286.16x = 31,896.30 × 14,625.84
  4. Step 4: Simplify right side
    21,286.16x = 466,510,180.39
  5. Step 5: Solve for x
    x = 466,510,180.39/21,286.16
  6. Step 6: Final answer
    x = 21,916.13

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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.