Home / 30,838.79-42,550.29-18,091.31

Finding the Fourth Proportional to 30,838.79, 42,550.29 and 18,091.31

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Solution

The fourth proportional to 30,838.79, 42,550.29 and 18,091.31 is: 24,961.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,838.79 : 42,550.29 = 18,091.31 : x
  2. Step 2: Convert to fraction form
    30,838.79/42,550.29 = 18,091.31/x
  3. Step 3: Cross multiply
    30,838.79x = 42,550.29 × 18,091.31
  4. Step 4: Simplify right side
    30,838.79x = 769,790,274.23
  5. Step 5: Solve for x
    x = 769,790,274.23/30,838.79
  6. Step 6: Final answer
    x = 24,961.76

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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.