Home / 15,982.72-22,063.98-12,389.74

Finding the Fourth Proportional to 15,982.72, 22,063.98 and 12,389.74

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Solution

The fourth proportional to 15,982.72, 22,063.98 and 12,389.74 is: 17,103.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,982.72 : 22,063.98 = 12,389.74 : x
  2. Step 2: Convert to fraction form
    15,982.72/22,063.98 = 12,389.74/x
  3. Step 3: Cross multiply
    15,982.72x = 22,063.98 × 12,389.74
  4. Step 4: Simplify right side
    15,982.72x = 273,366,975.57
  5. Step 5: Solve for x
    x = 273,366,975.57/15,982.72
  6. Step 6: Final answer
    x = 17,103.91

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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.