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Finding the Fourth Proportional to 30,358.68, 41,895.21 and 16,930.80

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Solution

The fourth proportional to 30,358.68, 41,895.21 and 16,930.80 is: 23,364.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,358.68 : 41,895.21 = 16,930.80 : x
  2. Step 2: Convert to fraction form
    30,358.68/41,895.21 = 16,930.80/x
  3. Step 3: Cross multiply
    30,358.68x = 41,895.21 × 16,930.80
  4. Step 4: Simplify right side
    30,358.68x = 709,319,421.47
  5. Step 5: Solve for x
    x = 709,319,421.47/30,358.68
  6. Step 6: Final answer
    x = 23,364.63

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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.