Home / 31,313.76-43,221.16-19,370.16

Finding the Fourth Proportional to 31,313.76, 43,221.16 and 19,370.16

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Solution

The fourth proportional to 31,313.76, 43,221.16 and 19,370.16 is: 26,735.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,313.76 : 43,221.16 = 19,370.16 : x
  2. Step 2: Convert to fraction form
    31,313.76/43,221.16 = 19,370.16/x
  3. Step 3: Cross multiply
    31,313.76x = 43,221.16 × 19,370.16
  4. Step 4: Simplify right side
    31,313.76x = 837,200,784.59
  5. Step 5: Solve for x
    x = 837,200,784.59/31,313.76
  6. Step 6: Final answer
    x = 26,735.88

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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.