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Finding the Fourth Proportional to 13,005.99, 17,943.39 and 8,532.21

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Solution

The fourth proportional to 13,005.99, 17,943.39 and 8,532.21 is: 11,771.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,005.99 : 17,943.39 = 8,532.21 : x
  2. Step 2: Convert to fraction form
    13,005.99/17,943.39 = 8,532.21/x
  3. Step 3: Cross multiply
    13,005.99x = 17,943.39 × 8,532.21
  4. Step 4: Simplify right side
    13,005.99x = 153,096,771.59
  5. Step 5: Solve for x
    x = 153,096,771.59/13,005.99
  6. Step 6: Final answer
    x = 11,771.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.