Home / 31,725.36-43,781.58-19,157.40

Finding the Fourth Proportional to 31,725.36, 43,781.58 and 19,157.40

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Solution

The fourth proportional to 31,725.36, 43,781.58 and 19,157.40 is: 26,437.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,725.36 : 43,781.58 = 19,157.40 : x
  2. Step 2: Convert to fraction form
    31,725.36/43,781.58 = 19,157.40/x
  3. Step 3: Cross multiply
    31,725.36x = 43,781.58 × 19,157.40
  4. Step 4: Simplify right side
    31,725.36x = 838,741,240.69
  5. Step 5: Solve for x
    x = 838,741,240.69/31,725.36
  6. Step 6: Final answer
    x = 26,437.56

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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.