Home / 13,283.65-18,333.21-8,581.60

Finding the Fourth Proportional to 13,283.65, 18,333.21 and 8,581.60

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Solution

The fourth proportional to 13,283.65, 18,333.21 and 8,581.60 is: 11,843.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,283.65 : 18,333.21 = 8,581.60 : x
  2. Step 2: Convert to fraction form
    13,283.65/18,333.21 = 8,581.60/x
  3. Step 3: Cross multiply
    13,283.65x = 18,333.21 × 8,581.60
  4. Step 4: Simplify right side
    13,283.65x = 157,328,274.94
  5. Step 5: Solve for x
    x = 157,328,274.94/13,283.65
  6. Step 6: Final answer
    x = 11,843.75

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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.