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Finding the Fourth Proportional to 30,284.77, 41,790.90 and 18,953.79

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Solution

The fourth proportional to 30,284.77, 41,790.90 and 18,953.79 is: 26,154.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,284.77 : 41,790.90 = 18,953.79 : x
  2. Step 2: Convert to fraction form
    30,284.77/41,790.90 = 18,953.79/x
  3. Step 3: Cross multiply
    30,284.77x = 41,790.90 × 18,953.79
  4. Step 4: Simplify right side
    30,284.77x = 792,095,942.51
  5. Step 5: Solve for x
    x = 792,095,942.51/30,284.77
  6. Step 6: Final answer
    x = 26,154.93

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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.