Home / 31,518.78-47,274.39-8,144.34

Finding the Fourth Proportional to 31,518.78, 47,274.39 and 8,144.34

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Solution

The fourth proportional to 31,518.78, 47,274.39 and 8,144.34 is: 12,215.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,518.78 : 47,274.39 = 8,144.34 : x
  2. Step 2: Convert to fraction form
    31,518.78/47,274.39 = 8,144.34/x
  3. Step 3: Cross multiply
    31,518.78x = 47,274.39 × 8,144.34
  4. Step 4: Simplify right side
    31,518.78x = 385,018,705.45
  5. Step 5: Solve for x
    x = 385,018,705.45/31,518.78
  6. Step 6: Final answer
    x = 12,215.53

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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.