Home / 31,230.77-43,086.35-19,898.23

Finding the Fourth Proportional to 31,230.77, 43,086.35 and 19,898.23

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Solution

The fourth proportional to 31,230.77, 43,086.35 and 19,898.23 is: 27,451.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,230.77 : 43,086.35 = 19,898.23 : x
  2. Step 2: Convert to fraction form
    31,230.77/43,086.35 = 19,898.23/x
  3. Step 3: Cross multiply
    31,230.77x = 43,086.35 × 19,898.23
  4. Step 4: Simplify right side
    31,230.77x = 857,342,102.16
  5. Step 5: Solve for x
    x = 857,342,102.16/31,230.77
  6. Step 6: Final answer
    x = 27,451.84

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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.