Home / 31,227.34-43,111.56-20,647.66

Finding the Fourth Proportional to 31,227.34, 43,111.56 and 20,647.66

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Solution

The fourth proportional to 31,227.34, 43,111.56 and 20,647.66 is: 28,505.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,227.34 : 43,111.56 = 20,647.66 : x
  2. Step 2: Convert to fraction form
    31,227.34/43,111.56 = 20,647.66/x
  3. Step 3: Cross multiply
    31,227.34x = 43,111.56 × 20,647.66
  4. Step 4: Simplify right side
    31,227.34x = 890,152,832.95
  5. Step 5: Solve for x
    x = 890,152,832.95/31,227.34
  6. Step 6: Final answer
    x = 28,505.56

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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.