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Finding the Fourth Proportional to 15,954.10, 23,920.35 and 8,458.90

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Solution

The fourth proportional to 15,954.10, 23,920.35 and 8,458.90 is: 12,682.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,954.10 : 23,920.35 = 8,458.90 : x
  2. Step 2: Convert to fraction form
    15,954.10/23,920.35 = 8,458.90/x
  3. Step 3: Cross multiply
    15,954.10x = 23,920.35 × 8,458.90
  4. Step 4: Simplify right side
    15,954.10x = 202,339,848.62
  5. Step 5: Solve for x
    x = 202,339,848.62/15,954.10
  6. Step 6: Final answer
    x = 12,682.62

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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.