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Finding the Fourth Proportional to 19,951.30, 29,930.55 and 10,065.70

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Solution

The fourth proportional to 19,951.30, 29,930.55 and 10,065.70 is: 15,100.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,951.30 : 29,930.55 = 10,065.70 : x
  2. Step 2: Convert to fraction form
    19,951.30/29,930.55 = 10,065.70/x
  3. Step 3: Cross multiply
    19,951.30x = 29,930.55 × 10,065.70
  4. Step 4: Simplify right side
    19,951.30x = 301,271,937.14
  5. Step 5: Solve for x
    x = 301,271,937.14/19,951.30
  6. Step 6: Final answer
    x = 15,100.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.