Home / 31,403.04-43,342.32-20,793.12

Finding the Fourth Proportional to 31,403.04, 43,342.32 and 20,793.12

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Solution

The fourth proportional to 31,403.04, 43,342.32 and 20,793.12 is: 28,698.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,403.04 : 43,342.32 = 20,793.12 : x
  2. Step 2: Convert to fraction form
    31,403.04/43,342.32 = 20,793.12/x
  3. Step 3: Cross multiply
    31,403.04x = 43,342.32 × 20,793.12
  4. Step 4: Simplify right side
    31,403.04x = 901,222,060.84
  5. Step 5: Solve for x
    x = 901,222,060.84/31,403.04
  6. Step 6: Final answer
    x = 28,698.56

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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.