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Finding the Fourth Proportional to 19,261.10, 28,891.65 and 9,401.90

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Solution

The fourth proportional to 19,261.10, 28,891.65 and 9,401.90 is: 14,102.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,261.10 : 28,891.65 = 9,401.90 : x
  2. Step 2: Convert to fraction form
    19,261.10/28,891.65 = 9,401.90/x
  3. Step 3: Cross multiply
    19,261.10x = 28,891.65 × 9,401.90
  4. Step 4: Simplify right side
    19,261.10x = 271,636,404.14
  5. Step 5: Solve for x
    x = 271,636,404.14/19,261.10
  6. Step 6: Final answer
    x = 14,102.85

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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.