Home / 31,523.72-43,520.50-20,927.84

Finding the Fourth Proportional to 31,523.72, 43,520.50 and 20,927.84

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Solution

The fourth proportional to 31,523.72, 43,520.50 and 20,927.84 is: 28,892.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,523.72 : 43,520.50 = 20,927.84 : x
  2. Step 2: Convert to fraction form
    31,523.72/43,520.50 = 20,927.84/x
  3. Step 3: Cross multiply
    31,523.72x = 43,520.50 × 20,927.84
  4. Step 4: Simplify right side
    31,523.72x = 910,790,060.72
  5. Step 5: Solve for x
    x = 910,790,060.72/31,523.72
  6. Step 6: Final answer
    x = 28,892.21

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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.