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Finding the Fourth Proportional to 30,387.46, 41,934.74 and 16,958.71

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Solution

The fourth proportional to 30,387.46, 41,934.74 and 16,958.71 is: 23,403.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,387.46 : 41,934.74 = 16,958.71 : x
  2. Step 2: Convert to fraction form
    30,387.46/41,934.74 = 16,958.71/x
  3. Step 3: Cross multiply
    30,387.46x = 41,934.74 × 16,958.71
  4. Step 4: Simplify right side
    30,387.46x = 711,159,009.79
  5. Step 5: Solve for x
    x = 711,159,009.79/30,387.46
  6. Step 6: Final answer
    x = 23,403.04

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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.