Home / 31,380.80-43,303.56-17,230.64

Finding the Fourth Proportional to 31,380.80, 43,303.56 and 17,230.64

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Solution

The fourth proportional to 31,380.80, 43,303.56 and 17,230.64 is: 23,777.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,380.80 : 43,303.56 = 17,230.64 : x
  2. Step 2: Convert to fraction form
    31,380.80/43,303.56 = 17,230.64/x
  3. Step 3: Cross multiply
    31,380.80x = 43,303.56 × 17,230.64
  4. Step 4: Simplify right side
    31,380.80x = 746,148,053.08
  5. Step 5: Solve for x
    x = 746,148,053.08/31,380.80
  6. Step 6: Final answer
    x = 23,777.22

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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.