Home / 13,236.66-18,270.69-8,520.94

Finding the Fourth Proportional to 13,236.66, 18,270.69 and 8,520.94

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Solution

The fourth proportional to 13,236.66, 18,270.69 and 8,520.94 is: 11,761.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,236.66 : 18,270.69 = 8,520.94 : x
  2. Step 2: Convert to fraction form
    13,236.66/18,270.69 = 8,520.94/x
  3. Step 3: Cross multiply
    13,236.66x = 18,270.69 × 8,520.94
  4. Step 4: Simplify right side
    13,236.66x = 155,683,407.57
  5. Step 5: Solve for x
    x = 155,683,407.57/13,236.66
  6. Step 6: Final answer
    x = 11,761.53

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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.