Home / 13,506.83-18,640.36-7,539.66

Finding the Fourth Proportional to 13,506.83, 18,640.36 and 7,539.66

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Solution

The fourth proportional to 13,506.83, 18,640.36 and 7,539.66 is: 10,405.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,506.83 : 18,640.36 = 7,539.66 : x
  2. Step 2: Convert to fraction form
    13,506.83/18,640.36 = 7,539.66/x
  3. Step 3: Cross multiply
    13,506.83x = 18,640.36 × 7,539.66
  4. Step 4: Simplify right side
    13,506.83x = 140,541,976.68
  5. Step 5: Solve for x
    x = 140,541,976.68/13,506.83
  6. Step 6: Final answer
    x = 10,405.25

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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.