Home / 15,540.34-23,310.67-12,440.05

Finding the Fourth Proportional to 15,540.34, 23,310.67 and 12,440.05

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Solution

The fourth proportional to 15,540.34, 23,310.67 and 12,440.05 is: 18,660.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,540.34 : 23,310.67 = 12,440.05 : x
  2. Step 2: Convert to fraction form
    15,540.34/23,310.67 = 12,440.05/x
  3. Step 3: Cross multiply
    15,540.34x = 23,310.67 × 12,440.05
  4. Step 4: Simplify right side
    15,540.34x = 289,985,954.04
  5. Step 5: Solve for x
    x = 289,985,954.04/15,540.34
  6. Step 6: Final answer
    x = 18,660.21

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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.