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Finding the Fourth Proportional to 11,407.88, 17,122.58 and 5,865.11

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Solution

The fourth proportional to 11,407.88, 17,122.58 and 5,865.11 is: 8,803.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,407.88 : 17,122.58 = 5,865.11 : x
  2. Step 2: Convert to fraction form
    11,407.88/17,122.58 = 5,865.11/x
  3. Step 3: Cross multiply
    11,407.88x = 17,122.58 × 5,865.11
  4. Step 4: Simplify right side
    11,407.88x = 100,425,815.18
  5. Step 5: Solve for x
    x = 100,425,815.18/11,407.88
  6. Step 6: Final answer
    x = 8,803.20

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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.