Home / 21,923.04-30,252.16-12,489.76

Finding the Fourth Proportional to 21,923.04, 30,252.16 and 12,489.76

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Solution

The fourth proportional to 21,923.04, 30,252.16 and 12,489.76 is: 17,234.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,923.04 : 30,252.16 = 12,489.76 : x
  2. Step 2: Convert to fraction form
    21,923.04/30,252.16 = 12,489.76/x
  3. Step 3: Cross multiply
    21,923.04x = 30,252.16 × 12,489.76
  4. Step 4: Simplify right side
    21,923.04x = 377,842,217.88
  5. Step 5: Solve for x
    x = 377,842,217.88/21,923.04
  6. Step 6: Final answer
    x = 17,234.94

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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.