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Finding the Fourth Proportional to 30,658.96, 45,972.23 and 15,865.12

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Solution

The fourth proportional to 30,658.96, 45,972.23 and 15,865.12 is: 23,789.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,658.96 : 45,972.23 = 15,865.12 : x
  2. Step 2: Convert to fraction form
    30,658.96/45,972.23 = 15,865.12/x
  3. Step 3: Cross multiply
    30,658.96x = 45,972.23 × 15,865.12
  4. Step 4: Simplify right side
    30,658.96x = 729,354,870.35
  5. Step 5: Solve for x
    x = 729,354,870.35/30,658.96
  6. Step 6: Final answer
    x = 23,789.29

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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.