Home / 20,945.16-31,418.64-5,953.32

Finding the Fourth Proportional to 20,945.16, 31,418.64 and 5,953.32

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Solution

The fourth proportional to 20,945.16, 31,418.64 and 5,953.32 is: 8,930.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,945.16 : 31,418.64 = 5,953.32 : x
  2. Step 2: Convert to fraction form
    20,945.16/31,418.64 = 5,953.32/x
  3. Step 3: Cross multiply
    20,945.16x = 31,418.64 × 5,953.32
  4. Step 4: Simplify right side
    20,945.16x = 187,045,217.88
  5. Step 5: Solve for x
    x = 187,045,217.88/20,945.16
  6. Step 6: Final answer
    x = 8,930.24

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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.