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Finding the Fourth Proportional to 13,283.66, 18,331.94 and 8,250.66

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Solution

The fourth proportional to 13,283.66, 18,331.94 and 8,250.66 is: 11,386.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,283.66 : 18,331.94 = 8,250.66 : x
  2. Step 2: Convert to fraction form
    13,283.66/18,331.94 = 8,250.66/x
  3. Step 3: Cross multiply
    13,283.66x = 18,331.94 × 8,250.66
  4. Step 4: Simplify right side
    13,283.66x = 151,250,624.71
  5. Step 5: Solve for x
    x = 151,250,624.71/13,283.66
  6. Step 6: Final answer
    x = 11,386.21

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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.