Home / 30,838.91-42,577.80-18,908.83

Finding the Fourth Proportional to 30,838.91, 42,577.80 and 18,908.83

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Solution

The fourth proportional to 30,838.91, 42,577.80 and 18,908.83 is: 26,106.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,838.91 : 42,577.80 = 18,908.83 : x
  2. Step 2: Convert to fraction form
    30,838.91/42,577.80 = 18,908.83/x
  3. Step 3: Cross multiply
    30,838.91x = 42,577.80 × 18,908.83
  4. Step 4: Simplify right side
    30,838.91x = 805,096,169.09
  5. Step 5: Solve for x
    x = 805,096,169.09/30,838.91
  6. Step 6: Final answer
    x = 26,106.51

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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.