Home / 15,540.98-23,311.64-12,440.70

Finding the Fourth Proportional to 15,540.98, 23,311.64 and 12,440.70

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Solution

The fourth proportional to 15,540.98, 23,311.64 and 12,440.70 is: 18,661.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,540.98 : 23,311.64 = 12,440.70 : x
  2. Step 2: Convert to fraction form
    15,540.98/23,311.64 = 12,440.70/x
  3. Step 3: Cross multiply
    15,540.98x = 23,311.64 × 12,440.70
  4. Step 4: Simplify right side
    15,540.98x = 290,013,099.47
  5. Step 5: Solve for x
    x = 290,013,099.47/15,540.98
  6. Step 6: Final answer
    x = 18,661.18

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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.