Home / 31,619.56-47,408.22-12,631.72

Finding the Fourth Proportional to 31,619.56, 47,408.22 and 12,631.72

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Solution

The fourth proportional to 31,619.56, 47,408.22 and 12,631.72 is: 18,939.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,619.56 : 47,408.22 = 12,631.72 : x
  2. Step 2: Convert to fraction form
    31,619.56/47,408.22 = 12,631.72/x
  3. Step 3: Cross multiply
    31,619.56x = 47,408.22 × 12,631.72
  4. Step 4: Simplify right side
    31,619.56x = 598,847,360.74
  5. Step 5: Solve for x
    x = 598,847,360.74/31,619.56
  6. Step 6: Final answer
    x = 18,939.14

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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.