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Finding the Fourth Proportional to 13,057.84, 17,999.40 and 8,858.80

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Solution

The fourth proportional to 13,057.84, 17,999.40 and 8,858.80 is: 12,211.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,057.84 : 17,999.40 = 8,858.80 : x
  2. Step 2: Convert to fraction form
    13,057.84/17,999.40 = 8,858.80/x
  3. Step 3: Cross multiply
    13,057.84x = 17,999.40 × 8,858.80
  4. Step 4: Simplify right side
    13,057.84x = 159,453,084.72
  5. Step 5: Solve for x
    x = 159,453,084.72/13,057.84
  6. Step 6: Final answer
    x = 12,211.29

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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.