Home / 22,389.78-33,510.85-12,379.13

Finding the Fourth Proportional to 22,389.78, 33,510.85 and 12,379.13

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Solution

The fourth proportional to 22,389.78, 33,510.85 and 12,379.13 is: 18,527.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,389.78 : 33,510.85 = 12,379.13 : x
  2. Step 2: Convert to fraction form
    22,389.78/33,510.85 = 12,379.13/x
  3. Step 3: Cross multiply
    22,389.78x = 33,510.85 × 12,379.13
  4. Step 4: Simplify right side
    22,389.78x = 414,835,221.39
  5. Step 5: Solve for x
    x = 414,835,221.39/22,389.78
  6. Step 6: Final answer
    x = 18,527.88

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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.