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Finding the Fourth Proportional to 30,358.86, 41,895.47 and 16,930.98

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Solution

The fourth proportional to 30,358.86, 41,895.47 and 16,930.98 is: 23,364.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,358.86 : 41,895.47 = 16,930.98 : x
  2. Step 2: Convert to fraction form
    30,358.86/41,895.47 = 16,930.98/x
  3. Step 3: Cross multiply
    30,358.86x = 41,895.47 × 16,930.98
  4. Step 4: Simplify right side
    30,358.86x = 709,331,280.01
  5. Step 5: Solve for x
    x = 709,331,280.01/30,358.86
  6. Step 6: Final answer
    x = 23,364.89

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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.