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Finding the Fourth Proportional to 17,890.76, 24,684.80 and 9,930.99

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Solution

The fourth proportional to 17,890.76, 24,684.80 and 9,930.99 is: 13,702.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,890.76 : 24,684.80 = 9,930.99 : x
  2. Step 2: Convert to fraction form
    17,890.76/24,684.80 = 9,930.99/x
  3. Step 3: Cross multiply
    17,890.76x = 24,684.80 × 9,930.99
  4. Step 4: Simplify right side
    17,890.76x = 245,144,452.30
  5. Step 5: Solve for x
    x = 245,144,452.30/17,890.76
  6. Step 6: Final answer
    x = 13,702.30

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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.