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Finding the Fourth Proportional to 10,808.10, 16,212.15 and 7,308.90

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Solution

The fourth proportional to 10,808.10, 16,212.15 and 7,308.90 is: 10,963.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,808.10 : 16,212.15 = 7,308.90 : x
  2. Step 2: Convert to fraction form
    10,808.10/16,212.15 = 7,308.90/x
  3. Step 3: Cross multiply
    10,808.10x = 16,212.15 × 7,308.90
  4. Step 4: Simplify right side
    10,808.10x = 118,492,983.14
  5. Step 5: Solve for x
    x = 118,492,983.14/10,808.10
  6. Step 6: Final answer
    x = 10,963.35

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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.