Home / 31,400.51-43,344.09-20,793.56

Finding the Fourth Proportional to 31,400.51, 43,344.09 and 20,793.56

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Solution

The fourth proportional to 31,400.51, 43,344.09 and 20,793.56 is: 28,702.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,400.51 : 43,344.09 = 20,793.56 : x
  2. Step 2: Convert to fraction form
    31,400.51/43,344.09 = 20,793.56/x
  3. Step 3: Cross multiply
    31,400.51x = 43,344.09 × 20,793.56
  4. Step 4: Simplify right side
    31,400.51x = 901,277,719.34
  5. Step 5: Solve for x
    x = 901,277,719.34/31,400.51
  6. Step 6: Final answer
    x = 28,702.65

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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.