Home / 31,702.56-43,736.96-20,370.32

Finding the Fourth Proportional to 31,702.56, 43,736.96 and 20,370.32

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Solution

The fourth proportional to 31,702.56, 43,736.96 and 20,370.32 is: 28,102.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,702.56 : 43,736.96 = 20,370.32 : x
  2. Step 2: Convert to fraction form
    31,702.56/43,736.96 = 20,370.32/x
  3. Step 3: Cross multiply
    31,702.56x = 43,736.96 × 20,370.32
  4. Step 4: Simplify right side
    31,702.56x = 890,935,871.03
  5. Step 5: Solve for x
    x = 890,935,871.03/31,702.56
  6. Step 6: Final answer
    x = 28,102.96

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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.