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Finding the Fourth Proportional to 11,290.40, 17,000.12 and 10,599.20

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Solution

The fourth proportional to 11,290.40, 17,000.12 and 10,599.20 is: 15,959.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,290.40 : 17,000.12 = 10,599.20 : x
  2. Step 2: Convert to fraction form
    11,290.40/17,000.12 = 10,599.20/x
  3. Step 3: Cross multiply
    11,290.40x = 17,000.12 × 10,599.20
  4. Step 4: Simplify right side
    11,290.40x = 180,187,671.90
  5. Step 5: Solve for x
    x = 180,187,671.90/11,290.40
  6. Step 6: Final answer
    x = 15,959.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.