Home / 13,485.26-18,609.74-7,517.31

Finding the Fourth Proportional to 13,485.26, 18,609.74 and 7,517.31

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Solution

The fourth proportional to 13,485.26, 18,609.74 and 7,517.31 is: 10,373.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,485.26 : 18,609.74 = 7,517.31 : x
  2. Step 2: Convert to fraction form
    13,485.26/18,609.74 = 7,517.31/x
  3. Step 3: Cross multiply
    13,485.26x = 18,609.74 × 7,517.31
  4. Step 4: Simplify right side
    13,485.26x = 139,895,184.60
  5. Step 5: Solve for x
    x = 139,895,184.60/13,485.26
  6. Step 6: Final answer
    x = 10,373.93

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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.