Home / 31,861.78-43,956.98-20,530.37

Finding the Fourth Proportional to 31,861.78, 43,956.98 and 20,530.37

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Solution

The fourth proportional to 31,861.78, 43,956.98 and 20,530.37 is: 28,324.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,861.78 : 43,956.98 = 20,530.37 : x
  2. Step 2: Convert to fraction form
    31,861.78/43,956.98 = 20,530.37/x
  3. Step 3: Cross multiply
    31,861.78x = 43,956.98 × 20,530.37
  4. Step 4: Simplify right side
    31,861.78x = 902,453,063.48
  5. Step 5: Solve for x
    x = 902,453,063.48/31,861.78
  6. Step 6: Final answer
    x = 28,324.00

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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.