Home / 13,220.32-18,243.72-8,504.59

Finding the Fourth Proportional to 13,220.32, 18,243.72 and 8,504.59

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Solution

The fourth proportional to 13,220.32, 18,243.72 and 8,504.59 is: 11,736.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,220.32 : 18,243.72 = 8,504.59 : x
  2. Step 2: Convert to fraction form
    13,220.32/18,243.72 = 8,504.59/x
  3. Step 3: Cross multiply
    13,220.32x = 18,243.72 × 8,504.59
  4. Step 4: Simplify right side
    13,220.32x = 155,155,358.67
  5. Step 5: Solve for x
    x = 155,155,358.67/13,220.32
  6. Step 6: Final answer
    x = 11,736.13

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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.