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Finding the Fourth Proportional to 11,355.66, 17,043.66 and 5,812.80

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Solution

The fourth proportional to 11,355.66, 17,043.66 and 5,812.80 is: 8,724.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,355.66 : 17,043.66 = 5,812.80 : x
  2. Step 2: Convert to fraction form
    11,355.66/17,043.66 = 5,812.80/x
  3. Step 3: Cross multiply
    11,355.66x = 17,043.66 × 5,812.80
  4. Step 4: Simplify right side
    11,355.66x = 99,071,386.85
  5. Step 5: Solve for x
    x = 99,071,386.85/11,355.66
  6. Step 6: Final answer
    x = 8,724.41

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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.