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Finding the Fourth Proportional to 11,115.30, 16,672.95 and 10,208.10

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Solution

The fourth proportional to 11,115.30, 16,672.95 and 10,208.10 is: 15,312.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,115.30 : 16,672.95 = 10,208.10 : x
  2. Step 2: Convert to fraction form
    11,115.30/16,672.95 = 10,208.10/x
  3. Step 3: Cross multiply
    11,115.30x = 16,672.95 × 10,208.10
  4. Step 4: Simplify right side
    11,115.30x = 170,199,140.90
  5. Step 5: Solve for x
    x = 170,199,140.90/11,115.30
  6. Step 6: Final answer
    x = 15,312.15

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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.