Home / 18,647.35-25,720.24-12,271.91

Finding the Fourth Proportional to 18,647.35, 25,720.24 and 12,271.91

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Solution

The fourth proportional to 18,647.35, 25,720.24 and 12,271.91 is: 16,926.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,647.35 : 25,720.24 = 12,271.91 : x
  2. Step 2: Convert to fraction form
    18,647.35/25,720.24 = 12,271.91/x
  3. Step 3: Cross multiply
    18,647.35x = 25,720.24 × 12,271.91
  4. Step 4: Simplify right side
    18,647.35x = 315,636,470.46
  5. Step 5: Solve for x
    x = 315,636,470.46/18,647.35
  6. Step 6: Final answer
    x = 16,926.61

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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.