Home / 21,238.95-29,306.84-12,286.83

Finding the Fourth Proportional to 21,238.95, 29,306.84 and 12,286.83

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Solution

The fourth proportional to 21,238.95, 29,306.84 and 12,286.83 is: 16,954.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,238.95 : 29,306.84 = 12,286.83 : x
  2. Step 2: Convert to fraction form
    21,238.95/29,306.84 = 12,286.83/x
  3. Step 3: Cross multiply
    21,238.95x = 29,306.84 × 12,286.83
  4. Step 4: Simplify right side
    21,238.95x = 360,088,099.48
  5. Step 5: Solve for x
    x = 360,088,099.48/21,238.95
  6. Step 6: Final answer
    x = 16,954.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.